Great script.

I noticed because my system drive is D that the drive space on C is not very useful to me. I suggest the following code but I'm sure someone else can do much better

code:
  
$SysDrv = substr("%windir%",1,3)
$DiskSpace = GetDiskSpace($SysDrv) /1024
and then in the report section

code:
   
Available Drive Space On $sysdrv : $DiskSpace MB