Ok, so here is the problem. I googled this and this is a known issue, but I haven't seen any good solutions.
Let's say some clicks a button in an Update Panel (VS 2008). Let's say that button results in a Server.Transfer("somepage.aspx"). It doesn't work. Server.Transfer cannot be called from within an Update Panel.
So, how do I transfer the person to a new page and pass values??!