I know it is getting near beer time, but I haven't found a solution to my problem. I need to know if a particular drive is SUBST'ed or not. I can use ExtractUNCFileName to see if it is mapped, and I can use the GetDriveType API to see if the drive is removable/ fixed/ remote etc BUT neither of these methods will correctly identify a SUBST'ed drive. Any pointers? Wes Edwards CommSoft Group Ltd PO Box 691, Shortland Street Auckland 1015, New Zealand Phone: +64 9 358 5900 Fax: +64 9 358 5901 Support+64 9 358 5902 Sales +64 9 358 5903 Email: [EMAIL PROTECTED] SmartCharge ... On Every Switch www.smartcharge.com --------------------------------------------------------------------------- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz