How do I find out my computers IP adress. I know my DSL modem's IP adress but I'm having problems with them and I read that the modem and computer IP adress should match so how do I find the Computer's IP adress?

ipconfig M2 If at first you don't succeed, you're about average.

Start > Run > Type 'CMD' > Enter. In the command prompt box type 'ipconfig' or 'ipconfig /all' for more detailed info. If you need to change the IP - right click my network places > properties > right click 'LAN' (or whatever you have called it) > properties > select TCP/IP Wizard ICT. Microsoft Certified Professional

only the first 3 octets should match but NEVER the last octet. so if you have 200.200.200.1 the other would be 200.200.200.2 as and example subnet mask should be the same for all octets like 255.255.255.0 for example.