Internet calls and VOIP Sound Problem

I saw a couple of thread reporting the problem with a 'sound device error' in most VOIP installations. I tried to reply on them but they were closed so i've opened a new thread. I used 'freecall' and experienced the same problem but the problem is easily solved.
1. Uninstall the software
2. Right click the setup file and go to Properties
3. On the second tab - Compatibility, tick the - Run in Windows XP Compatibility mode
4. Run Installation again

The solution works for Freecall and will hopefully work for other software having the same problem.

Vikas

while making internet calls i can hear their voice very clear but they cannot hear my voice.what to do? pls reply.i hve checked the microphone.its alright.