I am using IIS 4.0 and have recently run into this problem. .doc and .xls are not displaying when a user access them with IE. If a user tries the same page with Netscape the page will display fine. I have a duplicate of the site on a second machine that uses PWS and the .docs and .xls display fine when requested by IE from that machine. I recently made some permissions changes and I suspect that may be where some of the problems are. Has anyone ever seen this before?