Re:Sound Problem

[gep]

Hello All, have VoipCheap installed and Skype.
When i phone out, the other people on Landlines most of them hear Echoing, hear there voice repeated e.t.c.

I use a Mic, and i have used a Headphones/Mic combination, still they receive echoing e.t.c.
Others do not get this problem.

I have lowered the sound in Control panel, through the sound test there, it has improved slightly. Its not Voipcheaps problem as when i do the sound test on my computer in control panel, it echoes there.

I downloaded the latest driver for my sound card, there was a problem with the driver, so uninstalled it, still though the same problem.

Have a Windows XP Pro 3.2 Pent 1GB windows Media edition, Internet explorer 6, Firefox internet connection through NTL Broadband. Sound cards Realtek AC'97 Audio and have a ATI Radeon 9550 256MB Graphics card.

All connections seem ok.

Just hopefully got rid of all Malware, etc on my machine. Ran, A-Squared, ewido, Norton, Ad-Aware, Spybot, online scan at Panda, have Winpatrol, spywareblaster, Zonealarm all upto date. Also, CCleaner.

Can you suggest anything i might have missed.

Thanks, GEP