I am having a problems with the boost libs I have build the names does not start with lib

When I build boost using bjam "-sTOOLS=vc9" install
I got a bunch of .lib files in c:\boost\lib e.g. boost_thread-vc90-mt-1_35.lib
but when I build my library against tghis if fails to link since it needs a file libboost_thread-vc90-mt-1_35.lib

What am I doing wrong?

I am using boost from subversion, Windows Vista and Visual Studio 2008

Thanks in advance
Lars