Vista - Roaming Profile Problems

Okay now I may have missed something, but I thought that getting a roaming profile was as easy as going to the properties of the user in AD, then going to the profile tab and in the textbox next to "Profile Path" placing something like '\\<computer_name>\users\coyote' for an user called coyote. Then have the user log in and out (this should not require a reboot although tell me if it does or what you think). And poof under the coyote folder I should have a nice profile.V2 with Documents and other great folders under the profile. Am I right wrong or is their a better set of instructions that are very explicit because I been fooling around with this in 2003 Server R2 SP2 for a good two weeks and am clueless why it worked so easy for XP and not for Vista!

- Thanks!