There are 2 product keys that can be used to register TuneUp
Utilities 2008. Either one will work and you can enter anything for the
registration name.

Product Key 1 by PC User: LLYLB-ASGHK-ANKTM-DBYKS-QXQMT-ESRYC
Product Key 2 by CHIP: RFEAH-CDXKX-UMFBW-GSCES-YFWCM-WUHWB

Make sure you run the TuneUp Update Wizard after installation to
grab the latest updated files. Do take note that TuneUp Utilities 2008
supports and automatically adapts to Windows 2000, XP and Vista both 32
and 64 bit. Enjoy tweaking and optimizing your Windows computer!

From : Raymond.CC