There are two possible issues. First, you aren't running under true DOS in XP like you are in Win98. It's possible that ntvdm is not giving long filenames to 4DOS for some reason. ntvdm.exe is the NT virtual DOS manager. The other issue is that 4DOS is confused by the version number. ntvdm reports itself as 5.0 or 5.1, which is the correct version of NT. Obviously, DOS 5 didn't have lfn support. I know of another program that got confused by that also. Remember that development on 4DOS stopped when XP got popular so there was no reason for them to fix it. You could try the latest version though and see if that helps. I think it's 7.61. It wasn't ever intended to run under NT which is why they had 4NT. The download site is: http://4dos.hit.bg/ Butch Bussen wrote: > While we're discussing 4dos, can anyone tell me why it doesn't handle long > file names under xp. 4nt does, but when you do a dir, it doesn't speak > automatically. 4dos does, but for some reason it doesn't see xp as it does > 98. In 98, it is smart enough to know you have long file name support. > Just wondering if anyone knows of a solution. >