Sharon, I don't think you need to do this at all now (if you ever did before). The temporary files directory you show below is for IE's cache. You can modify your cache size and options from the Tools/Internet Options menu in IE. For Outlook, the way to compress file sizes, is to go File, Folder, Compact Folders (from OE menu). This should eliminate any wasted space. Depending on your view in OE, don't have a mailbox open when you compact the folders, otherwise it won't do that one. (Tho, there is an option to compact just the current one.) IE 5.5 and maybe sooner, uses *.dbx files to store mailboxes/folders. On my system, they can be found at: C:\WINDOWS\Application Data\Microsoft\Outlook Express. I have safely deleted old *.dbx files and/or backed up just that file. For example, when I've finished working on a project, and don't anticipate anymore work from the client, I'll archive the entire dbx file with the projects' files. You can copy and paste those DBX files to another computer and have those mailboxes show up there too. And if you ever need to reinstall windows, you can archive all the files in one spot. Anyway, hope I've answered your question, tho not specifically. FWIW (for what its worth), I had one index.dat file in the folder you mention and it was only 3 k... hardly going to save me any space ;) Good luck, holler back if you are still having problems. Michele ----- Original Message ----- From: "sfmalo" <sfmalo at msn.com> | Sometime ago I was given instructions on how to delete Outlook Express's | index.dat file. Since it gets real bloated over time, you can regain some | disk space by doing this. I hadn't done this since I upgraded to I.E. 5.5. | So today I tried it and, lo and behold, I got an "access denied" message! | Looked thru the MS Knowledge Base for an answer/solution but couldn't find | one. | | Anyone know how to do this now? | | P.S. This is how it was done before. At the MS-DOS prompt, change the dir | from c:\windows to c: Then, type in del | c:\windows\tempor~1\content.ie5\index.dat <enter>. IE automatically rebuilds | the file after that.