Right now I'm using an old Intervideo windvd 1.3.1a for DVD playback. It lags during high volume and high detail scenes, and there's severe lag whenever the THX logo plays for star wars. I have a pentium3 840mhz with a geforce DDR 256megs of pc133 ram Asus P3V4X mobo Hercules GTXP 6.1 latest drivers Which I think should be adequate for DVD playback. My pioneer 106S dvd player is set to slave on the same IDE as my hard drive, could this be a problem? I would like to upgrade WinDVD but havn't found an upgrade site that doesn't charge money. I have the serial cause it came with my graphics card. I also have PowerDVD V3.0 which came with my sound card. This program is lagless and would be perfect if it had support for 4.1 audio. PowerDVD has 4 speaker support and the subwoofer channel doesn't play any of the low notes like the windvd does. Is there a free upgrade for this one that will allow the use of 4.1 audio?