Darn it, no luck even after emptying the temp folder, huh? I'm still disturbed over the \Administrators\temp file that this program is being directed to, regardless of who is logged in, but let's check out a few of the basics things anyway....
I suppose you manually browsed to C:\Documents and Settings\Administrator\Local Settings\Temp and made sure the folder does exist and is using the path indicated by the error, made sure it is empty, checked the properties on the temp folder and made sure all read\system\hidden attributes were unchecked, made sure some funky sharing policy hasn't been put on it....
Have tried to log in as on the actual Administrator account and run the program that way.
Checked the variable settings for the temp folder via a right click on the "My Computer" icon on the desktop>select properties>select the advanced tab>select the "environment variables" button>and checked out what is being reflected in the names and values for temp path variables. I haven't ever changed or edited these values myself but I understand that that these can be redirected. I would have to do a study up on whether doing so would or could have any bad side effects or result in any unforeseen problems before I ever recommended this though but a look see can't hurt. Something odd may be seen and can be used to further explore this area.
The fact that you weren't able to use system restore bothers me. This would also require the need for a correct and healthy temp folder condition(combined with the 16 BIT WINDOWS SUBSYSTEM burp along with your previous statement, "This problem happened right after something was downloaded from the web"), are all signs that you may have picked up a critter of some kind. This doesn't mean you have been infected, only that you should be suspcious and extra cautious in eliminateing this possibility, If you have even the slightess doubt, even though you have ran Norton, I think I would also use other means to thoroughly
check for and eliminate this as a possibility. Online virus scans are always helpful along with the extra checks as directed by our security forum http://www.windowsbbs.com/forumdispl...ysprune=2&f=41
Stickies at the top of the forum have links and how tos.
On the off chance that these files have been altered in someway, have you opened your config.nt and autoexec.nt, in notepad, to check for default settings or look for altered settings that should not be there.
A checkdisk may or may not help, File or folder corruption is always a possibility.
Other than the above I can't really think of to much more beyond some unknown problem with the old dos program your using. I'll keep thinking on this and if I come up with something else I'll let ya' know.