Making BJAM 1.33.1 in boost compile with Microsoft Visual Studio 8

When trying to build a boost 1.33.1 library with bjam, I keep getting thousands of errors with command similar to this:

 CALL "C:\Program Files\Microsoft Visual Studio\VC98\bin\VCVARS32.BAT" >nul

Is there any way to change where bjam searchs for Microsoft Visual Studio for 开发者_Go百科boost 1.33.1? My Visual Studio installation is located in "C:\Program Files\Microsoft Visual Studio 8"

Thank you for the suggestions ildjarn and Nicol Bolas.

I did a manual text search for VC98 and found an HTML help file, msvc-tools.html, which states that if the MSVC_ROOT variable defaults to "c:\Program Files\Microsoft Visual Studio\VC98" if not specified. I simply set the MSVC_ROOT variable to my Visual Studio 8 directory and things compiled.