ITNinja

It looks like it may be a known issue.  There may be some information here:

http://msdn.microsoft.com/en-us/library/ms143505(v=SQL.90).aspx

Do you have any specifics of the issues you are having?

SQLEXPR32.EXE" /qb REMOVE=ALL INSTANCENAME=MSQLSERVER  it didn't helped at all.  Is there any other way to do it.

I read somewhere that I could do it by typing 'start /wait <drive:>\sqlexpr32.exe /qb REMOVE=ALL INSTANCENAME=SQLEXPRESS'

when I do that it extracts the support files to install the sqlexpress but it is already installed.

Best approach is to do it manually as there's no way (AFAIK) for Windows Installer to know how many databases or database instances you have. Plus, you can be sure to avoid removing databases that shouldn't be removed, in which case you'd have to leave SQLExpress installed anyway.