Here's a cool site with bios of all the big 24 stars, summaries and info on days 1-8, and other fun stuff like cool 24 desktops and a MP3 download of the ever so distinctive CTU ring. Check it out!
Kiefer Sutherland is signed with fuchs intill 2009! However I still am unsure of when the seventh season was going to start.. I couldn't find any solid reports.