Best chance of success is to build it for perl 5.10 using Visual Studio. It looks to me that it's one of those ghastly source distros that have been put together to be built specifically with Visual Studio and nmake.

There's the added problem that MinGW doesn't come with the header file lmdfs.h (which is needed to build the extension from source).

A Win32::Lanman built using Visual Studio will work fine on Strawberry Perl, but you might have to wait until someone builds a 5.10 ppm - unless you can find one somewhere already (which I couldn't). I did notice that there are Win32::Lanman ppm's for 5.6 and 5.8 available at the bribes repository. Perhaps try asking that rep's maintainer about the possibility of a 5.10 ppm package becoming available. (You'll find his email address at the bottom of http://www.bribes.org/perl/ppmdir.html.)

Cheers,
Rob