thank you very much for your detailed answer!
still....
1-how can i delete hotfix uninstallers in vista, without deleting the hotfix itself? (only the uninstaller) i think understood that they aren't hotfix uninstaller in vista?
2-could you find in piriform web site any page/decleration about hotfix uninstallers in vista?
3-i noticed that C:\Windows\winsxs is 6giga! can i/what to delete from it?
hope you can answer me again 3 questions in detailes-thanks again!