I have some script i wrote for opening specific locations on our servers...
ie

string $geoPath = $workPath + "/geo/*";
string $oPath = fileDialog -m 0 -dm $geoPath;

or even

string $oPath = fileDialog -m 0 -dm "//3D/3D/libraries/model\_lib/*";

in maya 2009 in would open the file browser set to the correct directory listed with the flag -dm..
in 2010 it is opening it to whatever last directory maya was using or something along those lines.
Any ideas? Using Vista 64
Thanks

-Erik