Isaac Image Browser

First of all, congratulations on a superb job. I want to put isaac3 running under IIS, on windows XP. I already have IIS running php, but when I run isaac3 code, it gives me the message of permission denied on the windows\temp folder to store the session (that's what i understood). When i run it from wamp server, it runs ok... In my research i found out that it could be a problem with the gd library - i reinstalled it, even eith the one on wamp server over the iis one, and it still doesn't work. Sooooo the real question is: which configuration i must do on PHP so isaac can run under iis?

by the way, isaac + lightbox script = SHOW!