Audigy Player and Microsoft Gamevoice

Hi! I’ve just installed my new Audigy Player card but had to find out that whenever the system tries to identify the Hardware it stops with an error message saying: \"Soundhardware cannot play any sounds\".
I can hear music, f/x in games etc. but the micro don’t seem to work right...?! Yes, it\'s correctly plugged in. ;) and I am using the new driver updates Sound Blaster for Windows XP.
My Hardware: AMD Athlon 1,4 GHz Mainboard, Abit KGT- Raid, 512 MB, Asus Geforce 2 Gts, Audigy – I am running Windows XP and I’ve got DTT 2500 speakers connected to the digital output.
Can you help me in any way? It would be appreciated!
Thank you very much