for drives currently available on remote machine you could use registry or:
code:
break on
$machine= "\\what_ever_you_want_to_check_on"
$ascii = 67 ; "C"
while $ascii < 91 ; "Z" 
$drive = $machine+"\"+chr($ascii)+"$"
if exist ( $drive )  
?"Drive $drive has "+getdiskspace($drive)+" bytes free"
endif
$ascii=$ascii+1
loop
exit
this works only NT/2000/XP without any tricks.
_________________________
!

download KiXnet