To begin -- XRules is some very useful and cool stuff!

I used TortoiseSVN to get the latest source from tigris.org and
compiled (I use VS 2005 and was interested in getting the source
formatted to that environment). Solution compiled without errors, but
saw lots of warnings similar to -- 'Microsoft.whatever.whatever' is
obsolete: 'Use of this type is not recommended because it is being
deprecated in Visual Studio 2005...'

Are there concerns with these?