SQL Server 2005 Upgrade Compatibility Issues

I am trying upgrade SQL Server 2005 Standard Edition 64 bit SP4 to "SQL Server 2005 ENTERPRISE edition 64 bit SP4" on WINDOWS 2008 R2 64 bit server and I keep getting the "This program has compatibility issues" message with

Program: Visual Studio

Publisher: Microsoft

Location: C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\devenv.exe

and other similar errors.

What I found on the Microsoft site is this

http://support.microsoft.com/kb/960320?wa=wsignin1.0

but this is for SP3. I am installing SP4. Does it stil apply ?. Is there any other way to get around this problem ?

Thanks.