Downgrading MS VStudio 2008 to 2005

If you have troubles with downgrading projects from Microsoft Visual Studio 2008 to 2005, try this method:
1. Open you *.sln file in Notepad;
2. Replace:
Microsoft Visual Studio Solution File, Format Version 10.00
# Visual Studio 2008
with
Microsoft Visual Studio Solution File, Format Version 9.00
# Visual Studio 2005
3. Save this file and try to open project in VS2005.

Actually, this should work only for simple projects, but have a try: who knows everything...