Intellisense support with MSBuild files Follow

Hi - I am using build 240 of R# for VS2005.

I would like to use R# to create and edit MSBuild files, but I do not know
how to get the support from R#.

I have created a file ending with .proj which I believe is the ending for
MSBuild files. However when I try to use the code-completion on the first
tag it simply says "no suggestion".

However if I complete the first ]]> tag manually I suddenly
get IntelliSense between the Project tags.

With .build files I have intellisense right away.

Regards
Thomas