Using templates (Code & User Interface)

Hi, Always I have a problem that I don't know how to make my code away from the user interface files. I tried to use some template classes, but I did'nt like what I tired because some if statments are used inside the template. How can I prepare my code to be working in more that one template? Should I use some methodology like FuseBox.org Regards, Hamid Hossain _________________________________________________________________ The new MSN 8: advanced junk mail protection and 2 months FREE* http://join.msn.com/?page=features/junkmail