I'm sorry but I no longer have the customized DOS APRS files for the Southeast. They were l0st in many server migrations
Download the latest version here (but look just above here for a customized plug 'n' play local versions and for help in getting started)
Your FTP client should open and if prompted, use anonymous for the user name and a blank for the password
APRS-PLUS
APRS-Plus. Works with DeLorme's Street Atlas 4, 5, 6, 7, or 8. May no longer work, as Brent Hildebrand has passed away.
The Original APRS for DOS
Look for a file named something like APRSxxx, where xxx is a number. Last known version was APRS848.ZIP (This FTP site may be gone)
WinAPRS. Works with Windows 98, 95 and 3.1 and can use Precision Mapping 3. (but nothing later)
Look for a file named waprsxxx where xxx is a number. Get the highest number. Last known was waprs246.zip (This FTP site may be gone)
APRS for the Apple Macintosh only.
I have no idea what file you need, but if you use a Mac, you should know ;-) (This FTP site may be gone)
JavAPRS. Not for the faint hearted (This FTP site may be gone)
Linux APRS files (This FTP site may be gone)
You may just want to browse all of the TAPR APRSSIG files.