Is this the adapter?
http://www.computernyc.com/seatatoideco.html
If so, it supports SATA I & II.
All IDE connectors are 40-pin - it's the cable that should be 80-wire.
Try with the drive without jumper.
I can't find a board called "DDR 266" at PC Chips.
Download the "
TSFdemo1" file, unpack and run it.
In "Tech Support Forum Hardware Reader" >> click "Copy to clipboard" >> paste the info in your post.