Hi, I am using STLport-4.5.3 and I am also using Microsoft Visual C++ .NET (Microsoft Development Environment 2003 Version 7.1.3088)as IDE for my project. I am trying to use regex in my application but I have some doubts and I am not able to link my application with boost_1_33_1. * Where should STLPORT_PATH should point to. I have set it to "C:\STLport" where STLport contains directories such as "STLport-4.5.3" etc. Is that correct? * Then I switched to directory c:\boost\boost_1_33_1\libs\regex\build * Then I run "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" * Then I run the following command nmake -f vc71-stlport.mak. It works OK. * When I run the following command "nmake -fvc71-stlport.mak install" I got an error as follows: Building Boost.Regex without ICU / Unicode support Hint:set ICU_PATH on the name command line to point to your ICU installation if you have one. NMAKE : fatal error U1073: Don't know how to make '"C:\STLport\stlport\string"' Stop. Any help will be highly appreciated! Regards: Vijay Kumar CONFIDENTIALITY NOTICE This e-mail transmission and any documents, files, or previous e-mail messages appended or attached to it, may contain information that is confidential or legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, printing, distribution, or use of the information contained or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error, please immediately notify the sender by telephone (091.0172.2299512) or return e-mail message (vkchoudhary@quark.com) and delete the original transmission, its attachments, and any copies without reading or saving in any manner. Thank you.