Hi,
I was wondering if the following has ever happened to anyone else, and if so, how did you fix it?
The Problem
Using the C130 (all models tried) in multi-player (read Vatsim) mode, I cannot connect to the voice servers using SB4 (Squwak Box is the only approved FSX Vatsim client) .
The issue
I do the before start procedures, bringing up to the radios.  At this point I innitiate SB4.  I connect (or at least try to) to the vatsim network, however, I get a general error window (11) stating that the program has to shut down.  Note here, that the SB program does not see the CS radios.  I cannot even text on frequencey.  The best I can do is PM, and that doesn't wash with ATC...I know, I am one.  The connection is active, as I show up on the online utilities such as Vatspy and vroute.  I just can't talk to anyone.
Validation
I have tried to solve this out on my own, however, I'm stuck for an answer.  I figure it is a conflict with something in the CS program, as this doesn't happen in any other aircraft I have.  When this first happened, I tried to isolate the issue by un-installing one program at a time, but have come to the conclusion that it is a CS issue.
The System
Gateway DX4200-UB001A
AMD Phenom 9550 Quad
ATI HD 3450
6 Gb RAM DDR2
Vista 64bit
3rd Party programs
Active Sky X
Flight Sim Commander 8.4
SB4


Any ideas and or help would be greatly appreciated,

Regards,
Jim Allan

I have to agree with James. I use FsInn for vatsim and have no problems with voice. Check you sound settings as James suggested and if that doesnt work then i would give FsInn and FsCopilot a try. There is a little learning curve to it but has a lot of features the SB doesnt. I have never used SB4 since it wasnt even out when I started fly fsx on vatsim.