I got error while installing Moss 2007 SP2. I am not getting any way to uninstall it now. And when i try to install it again it showing that Product is already installed. Please help me out and will the unistallation of SP2 will affect my Sharepoint sites

I agree with JD about the impossible scenario of uninstalling SP2 of MOSS server. Upgrade logs (to be frank) arent too helpful in telling you what could have caused the exception. Especially due to the bulk of information provided there, it is hard to figure that out anyway. Wish if it was possible or if anyone has any other approach, as far as I remember, when this happened on my servers I tried troubleshooting but it dint help. I finally had to re-build everything. BR, PM