Ive benn trying to fix this problem for a long time and i truly hope you guys can help me.Ive tried almost everything in the book.

Ok let me give you a brief history.
Ive been trying for weeks to get clean playback on avi files(it plays then slows for a sec plays and slows ect ect.) Im using Win me, 52 speed atapi cd, 12/4/32 iomega cdr, 640 megs of ram 50 gig hard drive, pentium 2 500mhz chip, velocity 5550 vid card. Ive tried countless divx players and a bunch of other stuff. Ive tried setting dma on but I keep lossing it after reboot. Is there a way to keep this on? I wanted to know if there was a dma manager prog or something like it. I dont know my board name but I have amibios v 1.19 and i used the board finder that ami lets you download and all i got was this 61-0330-001437-00111111-071595-ALi1621 I really need help guys this is driving me nuts!! Thanks ahead of time!!!!