WordPress MU

Hi All,

I have added various blogs which can be accessed when I visit subdomain.domain.com, however I cannot get into the control/admin panel, getting the well known "ERROR: WordPress requires Cookies but your browser does not support them or they are blocked" when I try to login into another blog.

I can log into the main blog without any problems though.

The solution of commenting out various lines etc reference lines on the wordpress and not multiuser.

Could someone help a noob like me?!
Thanks