Ok i have updated my video card drivers, sound drivers for my onboard sound [i have an asus motherboard], i even contacted activision and they just stopped replying.....i have patch 1.4 installed. im using windows xp and i plugged some old headphones into the pink jack. i enabled stereo mix for the headphone part. i also reinstalled my cod4 [but not completely cause i was afraid to lose some of my **** but i know to save the files, you think a complete reinstall would help?]. i also deleted that file from the miles folder and also replaced it with another one. here are my specs

amd athlon 64 4000+
nvidia geforce 7800 gt
asus a8v-xe

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iw3mp.exe Error