Hi Yanki - Welcome to w7forums
Basically what the Upgrade Adviser is telling you is that the program's may cause problems during the upgrade. It would be best if the program was uninstalled before the upgrade. Once the upgrade has completed, the applications that have been removed can be re-installed.
I had a look at the notebook you mentioned. The
ASUS U6S only has support for XP and Vista as you mentioned earlier. However Windows 7 will work with many of the applications designed for XP and Vista.