There was no driver support for this card by Adaptec since XP.
However, I found this:
"The current Adaptec drivers do not work with Windows Vista. I have a 1200A RAID card also and have found that the Rocket 100 drivers from Highpoint work very well with Vista and this card (both cards use the same Highpoint chipset). You can get them from http://www.highpoint-tech.com "
Try the Vista drivers and see if they work in Windows7