Is that the Second life model? Ive not downloaded it to see but off the SLmale description I'm guessing it is!

What you might need to do the select 1 sinle UV then go to select shell (or select all UV's in shell I think you need) this will select the pre UV's sections form the second life model, you can then assign each selection to a different UV set for texturing (as per the eSecond life guidelines that I think are available) so you can then add the texture files to the modle in Second life.
If its not a second life modle then the selections should still be valid unless its not been Uv mapped before, if this is the casethen theres lots of tutorials on UV mapping, also have a look in the help files for UV mapping as theres tutorials in there.

Hope it helps.