Hello all: I'm trying to use boost::asio in an app. I used the bootstrap.bat and then bjam to build and configure boost. I use the visual studio 2008 command prompt because when I run bootstrap.bat from the normal command prompt, I get: cl.exe - System Error The program can't start because mspdb100.dll is missing from your computer. Try reinstalling the program to fix this problem. the build is building vc100 libs, but when I try to build my app it's trying to link to vc90 libs. I am using 2008, so I am confused as to why this is working out to build vc100 libs. When I build: 1>LINK : fatal error LNK1104: cannot open file 'libboost_system-vc90-mt-gd-1_46_1.lib' so it looks like it's trying to link to vc90 libs when vc100 are all that's being built. Is there a way to get rid of this and build for vs 2008? -- Take care, Ty my website: http://tds-solutions.net blog: http://tds-solutions.net/blog skype: st8amnd127 My programs don't have bugs; they're randomly added features!