So, Windows XP Service Pack 3 came out today, so I install it on our 4 computers. My computer was the first to finish, so I began browsing the internet. Then, it just stopped working. At first we thought maybe SP3 screwed something up. But one of the computers hadn't begun installing it yet as it was still verifying the download and my computer had worked for awhile after it had finished. So we hook up my computer straight to the internet. It works fine. Any other computer hooked straight to it doesn't though. Just mine. Trying to go through the router makes my internet stop working. So we thought maybe something happened to our Linksys router or it wasn't compatible with SP3. So we got out our Microsoft router that we used before this one. Nothing changed. We went and removed SP3 on one of the three computers that couldn't get online at all so that it was on SP2 again. Again, nothing changed. WTF is going on? Any ideas?