cookies!

I'm working on my self-serve image randomizer system, and it is very well available for use: http://random.mrfrufru.com , and I just can't figure out how to make a cookie not expire until you click logout. There's people saying they don't get the cookie at all or the cookie disappears when they close their browser. I see that is working well on this forum. I tried looking through the code but I couldn't find it. Suppose I have this:

response.cookies("username")=user
response.cookies("password")=pass
if request.form("minutes")<>"-1" then
response.cookies("password").Expires = DateAdd("n", request.form("minutes"), Now())
else
response.cookies("password").Expires = DateAdd("yyyy", 2, Now())
end if


The login form has a drop-down named "minutes" and it gives the number of minutes the user selected to stay logged in, and -1 if they selected forever. So what do I need to do to make it work?

meh. nevermind. I got it working. I had to set the Expires property for both the username and password :P