Windows 7 - 17.5.0.127\uistub.exe

I'm running Inernet Security 2010 on Windows 7 and Norton has died - giving me the error many w XP have had - "c:\program files\norton internet security\engine\17.5.0.127\uistub/exe" and "unspecified error." I went to Live Update on the Norton Site and got the message that no Norton product was detected on my computer but when I put the disk in, I received options for uninstalling Norton's.  Is Norton's there or is it gone????  I saw XP users were advised to uninstall and reinstall Norton's - does this apply for Windows 7 also?  Thanks - skt.