netscape cookie problem

Hi! i am having SERIOUS problems getting Netscape (v4.6 and v6 - haven't tested any others yet) to accept cookies using the following code, IE works as expected, but not Netscape: setcookie("UserIDCookie", "$NewUserID", time()+31536000, "/", ".sheepinaheep.com.", 0); where $NewUserID is (you guessed it) the last inserted id from a mysql query, etc. i have been trying for many many hours and days to get this to work and have tried many different configurations of the above code... i have even researched many php resources (docs, faqts.com, netscape cookie specs, archived php.general postings, etc.)... no luck although i can get netscape to accept the cookie if i do NOT specify a domain, like this: setcookie("UserIDCookie", "$NewUserID", time()+31536000, "/"); but then i'm back to the problem of www.sheepinaheep.com having the cookie while sheepinaheep.com doesn't... or vice versa... any help that anyone can offer is GREATLY appreciated! sincerely, - kevin kevin@creationsite.com