Believing someone, I tried to "crack" ms office trial version to full version. It worked for a certain time. Then, it was locked.... one of my friend suggested me to delete the "office 12" in regedit, I did. Now it's working. But I need to uninstall it and install full version (real this time)..
can you help me guys?
GOGOL

you also need to clear the registry. many free softwares are avaiable online that clean registry for free. the one windows has doesn't work that good.

Bhikhaari, Thanks. Can you please tell me which software is good (safe)?

you can google for them. i used 'tweak xp' about 3-4 yrs ago; haven't had the need to clean my registry after that. so, good luck.

btw, have you tried uninstalling the software from control panel? trying to mess up the system files w/o uninstalling from control panel can make the program undeletable too.

I don't know what I did. I tried to uninstall from control panel.. it said: the program doesn't exist or already uninstalled... I wonder why MS OFFICE still works in my system.