Looking good so far, Nathan.

DDR3 RAM is confirmed on the mainboard and CPU, speeds of 1066 or "PC3-8500U" are supported but you can chose any fast DDR3 module which comes in at low prices.
As 1333 or "PC3-10667U" come at the same price as the slower ones, you can chose them to have some overclocking headroom if you want to go for it.
Go for at least 4GB, better 8 and install a current x64 operating system then. A Win7x64 Home or so will do fine. No expensive versions needed.

Your CPU won't kick bu.. in FSX but of course can run it, overclocking is recommended then, otherwise you are at the lower end of being capable to run detailed sceneries together with some complex birds.
Going for overclocking means that you should look for a good and not to pricey cooler then although the Athlon II X2 run very cool and haven't got a huge cooling demand.

As you said that it has to be a cheap HDD, SDDs don't play a role here, they are to pricey then and FSX installations usually grow and grow. So take a current 1-2GB variant with 7200rpm and you should be ok.
SDD performance in case of fps is almost not present in FSX, so you just have loading times to fight which is no problem on current discs.

You don't have to go for special SATAIII or "SATA 6Gb/s" models as they don't use the bandwidth of the very modern interface, so SATAII or "SATA 3Gb/s" is very much ok for normal HDDs.
Of course, if the price is the same, chose the SATAIII one.

A network card is included on your mainboard, even twice.
Quote:

No need to buy one. See here for the rest of specs of your board if questions arise http://www.gigabyte.com/products/product-page.aspx?pid=3258#sp

As for the monitor, your preference counts. I think that 24inch models have a nice price point nowadays. The cheaper models use TN-panels which are ok but may be less useful if you are looking for a true color representation.
The magic numbers like 1ms reaction time are mainly marketing ones, you won't find any bad monitors for us "slow" flight sim fans, shooter guys might have another preference then.
You should look for a full HD model, so the resolution will be 1920x1200 and your graphics card won't have problems with this when running FSX.
Other games might change this (performance) picture but a HD5750 can surely run some detail without struggling. Depends on the game of course.


You should choose some price watch site to find your new stuff. Not only watch for prices but also for the reputation of the shop and look at the details before buying.
You can also go to big discounters if the run a shop nearby, all other solutions can be fine too but will raise the price on some parts.
If you need some service though, chose the friendly shops of course.

This mainly means that you raise the default speed of your components. So if your CPU comes at 2.9ghz, you later run it at 3.5 (just an example).
This can be done easily nowadays but used to be a big task in earlier times.

There are various guides around the net, so if you have a running system you may want to read and try.
If you stay within save limits of temperatures and voltages, no harm is done but as the components only guarantee you their default speed, you may encounter instabilities when aiming too high or approaching somehow wrongly.

To get to know those limits is the task then. But, as said, if you google "Athlon X2 overclocking" or something you'll get more than enough information while your first task now is to complete your system and run it.  

For the overclocking thing, a fellow pc enthusiast sitting in front of your PC could be more helpful than any guide on the net.
As FSX generally is CPU limited, the speed of your CPU therefor is the value to raise while your graphics card comes in second place and usually won't give you big gains in performance.

What CoolP said 

not to run into to much techy stuff, but a nice idea would be adding RAID-1 support in your pc.

If you build in RAID-1 (mirror) and 1 disk fails, you computer still runs on the 2nd disk.  Simply replace the faulting disk and the available disk will build up the replaced disk, so you have the RAID-1 back up.

Saves you a lot of time on reinstalling your whole machine and all things on it and stress and even loss of data.

Also found this on google searching for FSX performance on a RAID-1 solution, but found nothing, but found something interesting on RAID-0
http://www.jetlinesystems.com/performance.html

*note: RAID-1 does not replace any backup, so making a copy of important files to a seperate disk is very wise.

i think his laptop is dead now haven't seen him since sunday oops i hope he comes back soon

nahh its just nath2889 cant do any repaints and post them here thats why it quiat lol

Do you have an update about Nathan's activities?

I hope that Christmas brings him some working system again. I have enough repaints to get over the calm days now, so his pause is approved.