I'm a math grad student, so it's unsurprising that my Gnome desktop contains a bunch of Mathematica files (which end in .nb). I'd like to have Gnome open up Mathematica when I double-click on a .nb file, but Gnome thinks these are text files -- which they are, in the same sense that an .html file is a text file. I can't figure out how to do this. I don't mind messing with mailcap files or whatever, but I'd like to do it "the Gnome way", which means mime types, right? I found this [1], which mentions a File Types and Programs preference tool...which I don't seem to have. I'm using Gnome 2.8 on FC 3, and don't have any administrative privileges on the machine. Any ideas? Thanks, Dan 1. http://www.gnome.org/learn/users-guide/2.8/ch11s05.html -- Ceci n'est pas une .signature. -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: Digital signature Url : http://shadowknight.real-time.com/pipermail/tclug-list/attachments/20051005/450008f7/attachment.pgp