just name the share method differently so instead of xns share going to g drive rename it g-drive and point it to the g drive, then do another called d-drive and point it to the d drive
<name>G Drive</name>
<url>G:@10.200.1.3</url>
<cachesize>8192</cachesize>
</share>
<name>D Driven</name>
<url>C:@10.200.1.3</url>
<cachesize>8192</cachesize>
</share>
or in relax if you create a subdir called movies and in this dir you put the two drives then you can get xbmp to log into that subdir rather than each dir separately :
<name>Network (XNS)</name>
<url>
[email protected]</url>
<cachesize>8192</cachesize>
</share>