I used to use a router, but I moved 3 months ago to another state and am using different internet altogether. This time, I do plug directly into the modem. It worked fine for the 3 months, and then abruptly I couldn't see/access any part of my site.
I put my computer in Safe Mode and followed these instructions (from
http://www.pchell.com/support/safemode.shtml) :
If Windows XP is the only operating system installed on your computer, booting into Safe Mode with these instructions.
* If the computer is running, shut down Windows, and then turn off the power
* Wait 30 seconds, and then turn the computer on.
* Start tapping the F8 key. The Windows Advanced Options Menu appears. If you begin tapping the F8 key too soon, some computers display a "keyboard error" message. To resolve this, restart the computer and try again.
* Ensure that the Safe mode option is selected.
* Press Enter. The computer then begins to start in Safe mode.
* When you are finished with all troubleshooting, close all programs and restart the computer as you normally would.
To use the System Configuration Utility method
* Close all open programs.
* Click Start, Run and type MSCONFIG in the box and click OK
* The System Configuration Utility appears, On the BOOT.INI tab, Check the "/SAFEBOOT" option, and then click OK and Restart your computer when prompted.
* The computer restarts in Safe mode.
* Perform the troubleshooting steps for which you are using Safe Mode.
When you are finished with troubleshooting in Safe mode, open MSCONFIG again, on the BOOT.INI tab, uncheck "/SAFEBOOT" and click OK to restart your computer
But other than that, I'm not really sure what to do in Safe Mode. :/