I don't have installed or use Visual Studio 2005 (or any other Visual Studio) and so I can't only tell you what maybe works after reading some documentations.
First I know that nearly all compilers and linkers support environment variables and so I made a quick search with google and found the page LINK Environment Variables on the MSDN website of Microsoft. I think, the environment variable LIB is for interest of you.
Next I know that it is possible to specify environment variables for a compiler or workspace/project.
Open Build - Select Compiler.
Choose the kind of Visual Studio 2005 compiler you need, for example Visual C++ Compiler - Windows Application.
Click on button Edit Configuration.
Scroll down in the right window to Environment.
You see in this section already the environment variable LIB. Add the library paths you need.
Save the configuration local or global.
Maybe also working is when you click on Build - Set Compiler Options, scroll down to the Linker - General section and modify Libraries = by adding additional libraries with full path.
I hope, this helps. I don't know if anything above really works.
Best regards from an UC/UE/UES for Windows user from Austria