I'm running Windows XP Home Edition, use MS Outlook for mail and Norton 2006 for Security on a dial-up Internet connection. In the last few weeks I have been unable to open .doc and .xls mail attachments when on-line or even after going off-line. I have to go off-line, turn off the computer, re-boot, and then I can open the attachments. .jpg and .pdf files are not affected. I can't seem to find a setting anywhere to fix this problem. Any ideas? walt22.