KT7-RAID Mouse jumps all over...wtf?

I am using the Microsoft Intellimouse Explorer mouse, (USB) and it randomly jitters around on the screen, both in win98 and w2000. this makes it quite hard to snipe people in delta force!

I also have ati radeon, sb live, netgear FA311.

thoughts?

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[SGC Moderate Member]

Put the PS2 adapter back on the mouse and see how it works then.

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AMD Duron 900|Soyo K7VTA|Soundblaster Live! X-Gamer|256 Mb pc-100|80 Gig 7,200 Western Digital|Sony 16X-10x-40x|Nvidia Geforce 2 64MB