i am using trial version software. after its trial period was complited. i removed it. and i try to reinstall it. but i can't be reinstalled. thats program software placed in registry. how can i find and remove that registry program and reinstall it.

   I don't know if I understand you or not, but from what I understand, you want to be able to uninstall the trial version because you have used up its free trial period and then you want to be able to reinstall it so that you can get another free trial period.
   I would suggest that you purchase it or don't use it.