Sunchaser,
I have been thinking about doing this too
I forsee 2 possable problems in doing this.
1. Most VCR's don't have a S-Video connectors.
2. Your divx/avi would have to be shown in full screen
so desktop and player would not be in the video stream.
To get around problem 1. You will need some cables/Adapters.
Cable 1: 12-Ft Gold-Series Stereo A/V Cable w/ S-Video RadioShack Catalog #: 15-1578 Price: $21.99
Link: _http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CT LG%5F002%5F002%5F022%5F002&product%5Fid=15%2D1578
Cable 2: 18" Shielded Cable RCA RadioShack Catalog #: 42-2365 Price: $1.99
Link: _http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CT LG%5F002%5F001%5F002%5F000&product%5Fid=42%2D2365
Adapter 1: RCAŽ to S-Video Signal Converter RadioShack Catalog #: 15-1238 Price: $19.99
Link: _http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=&p roduct%5Fid=15%2D1238
Adapter 2: 1/8 to RCA Gold-Plated Y-Adapter RadioShack Catalog #: 274-883 Price: $4.99
Link: _http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CT LG%5F005%5F003%5F009%5F004&product%5Fid=274%2D883
This setup should get your video from video card and sound from your sound card to your VCR.
Good Luck !!