A mate sent me some .dat files by e-mail. once downloaded they had that windows flag on them. I went to open the first one and was asked which program I wanted to open it in. I then made two mistakes in as many seconds. A) I forgot to uncheck the "always open with this program" box. B) I hit winzip. They aren't winzip files and now the following 23 have all got that winzip clamp thing logo on them. Can I reverse this anybody ? And what is a .dat file.
Legolas Even if we find out the OS what are .dat files supposed to be associated with. In XP they are "unknown application" but you can`t change a known file type such as .doc to unknown application. I fear this is a registry solution but am getting out of my depth.