I have been using the internet for last few years and everything worked fine. However, until few months ago, I could not defend from all sorts of viruses and adwares. I reinstalled OS several times but it did not help me for a long. After a day or two on the Internet, I have the same problems again. Now, whenever I try to connect to the Internet, I get the more than one router per LAN error. Which router to use w/Xbox 360? Should I try to change my Internet browser?
Your problem is not related to router. You can use any router you like. There are other browsers beside the Internet Explorer. Some of the most popular are Mozila and Opera. Many users also claims that they are so much better and safer then the Internet Explorer. I personally disagree with them. I am also on the Internet many hours per day, I am using Internet Explorer 7.0 and I do not have any problems. To solve your problem with connecting to the Internet, you need some anti-spyware software like SpyBot, which is completely free. Second thing you need is some good anti-virus software which is also free. I personally use AVG and I am completely satisfied. If you have XP, you also have to check do you have SP 2 installed. If don't then download and install it. All those things will not slow your machine much but will give you enough protection.