I have a unique problem. I have been running Theater Tek 2.5 on my Windows XP HTPC for years. Recently, through no fault of my own, using on-line tech support accessing my computer, my C\: was corrupted forcing me to do a clean reinstall of XP. All my settings were lost. In an attempt to reload Theater Tek, it says I have a limited trial period. In order to activate it I need to input a serial# (which I have) but also an activation code (which I don't). I have a very complicated setup involving other HTPC's & I would very much like to try & reconfigure my prior setup rather than purchasing a newer computer. As you know, Theater Tek is no longer supported, so if anyone could help me get it back up & running, I would be forever grateful!