Issues on uninstallation

I am using windows installer for creating setup.exe for my windows application. I have included CustomUninstall.exe to uninstall my product using start menu.Uninstall works perfectly but when the installed folder structure is open in the windows explorer i am getting one warning saying "C:\Program\Product name refers to location that is unavailable It could be on a harddrive on this computer ,or a network ." .Can anybody help me.

Also i would like to know some more info about uninstall
Is it possibl to change the UI before uninstall.By default Its like"Are you sure to uninstall this product".
How can i change to "Are you sure to uninstall [product-name]".

How can i provide one confirmation message after successful uninstall.

Does anyone have any solutions to this problems?


Thanks,
Patro