Thank you!
If fixing the IRQ didn't solve the problem then I'm gonna get that power supply I found and give it a try. (the video card is on the same IRQ as the modem)
And no, I'm not gonna do any overclocking, I'm not that good. Yet.

Not with this computer anyway.
Either this power supply will solve the problem or the IRQ. I'll probably end up doing both anyway.
thanks again!
Cheetah6
Defiance, here it is:
Emonster 500:
-Window98 SE
-500 mhz Intel III
-64 meg ram upgraded to 256 meg ram
-Switched from Voodoo3 3000 to Visiontek Geforce2 MX/400 AGP
-Napoli-2 Micro ATX Motherboard
-built-in Sound Blaster Pro / Crystal SoundFusion(tm)
-56k Conexant PCI Modem