[otrs] Custom items in CustomerLogin.dtl

Hi, I've read the instructions on how to insert aditional items in registration of new user. Successfully added a two phone items. 1] Now I want to insert a "Region" item, but I want to be a: <select> <option>X</option> <option>Y</option> </select> so users must select exactly one option, and that option of course insert to DB. But this doesn't work with the X</option>. I've a look to another dtl's and the comboboxes is made by a $Data{"somevar"} construct, so the complete <select><option> must be saved in the 'somevar' right? But then where to declare my variable? 2] And if this is posible, is there a way to filter incoming emails from POP3 account according to this "custom field" ? e.g. if a user have a region named 'X', then sort this ticket to queue named 'Region X' ? Thanks alot, Vladimir Benc