build ICU first - D:/src/icu4c-4_6-src/icu/source/allinone/allinone.sln
then create a batch file to build boost.
call "%VS100COMNTOOLS%/../../vc/bin/vcvars32.bat"
cd /d D:/src/boost_1_45_0
call bootstrap.bat
set ICU_PATH=D:/src/icu4c-4_6-src/icu
echo "build start" >> buildtime.txt
time /t >> buildtime.txt
bjam.exe --toolset=msvc stage --build-type=complete
time /t >> buildtime.txt
echo "build finished" >> buildtime.txt
