Export models from Maya to Left4Dead

[SteveN_25]

Hello,
I was wondering if I could get some help from some of the hammer guru's around here. I was wanting to export my model from maya into hammer but Im not sure how to do this. Iv installed the smd exporter and made a reference and physics layer. When I try to export I get this error

// Error: unable to open F:\Documents and Settings\Administrator\Desktop\test\export for write //
np_setNewLocation "F:/Documents and Settings/Administrator/Desktop/test/export" "directory";

I want to test the model in game and see if the UV space works.

cheers
steve