I am a new android user. My current phone is the Samsung Dart running 2.2. I was able to connect to my home wireless router easily when I first got my phone. When I went to a friends house I used their router and when I got home I was not able to connect to my network. When I go under "settings," "wireless and networks," and then "wifi settings" I keep getting an error message underneath the wifi check mark box. I have read other forum posts with a similar problem and they tried all types of restarts on the phone but it would never work. There must be some sort of software that I could download to fix this problem. If someone could assist that would be greatly appreciated.