If the IP you found the system assigned to itself was in the 169.254.x.x range, that means that your box could not connect to the DHCP server. Linux, Windows, and Mac boxen will all default to that range if unable to obtain a valid IP via DHCP.
You definitely do need to have a DHCP client running, and as already mentioned, if you accidentally installed and ran a DCHP server on the Linux box you'll have conflicts.
dhclient, dhcpcd, and pump are the three most-used DHCP client programs. You can see if you have one of them running by opening a terminal window and typing the following two commands:
ps ax |grep dhc
ps ax |grep pump
Also, posting the exact text of the "could not join..." error would be of great help. You can view your bootup message/error log with the following command; anything helpful in there?:
dmesg |less
DMR
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7,229 posts since Dec 2003
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Don't sweat it- any operating system is a steep learning curve if it's not not the one you're used to using.
A shameless plug that will help you if you want to learn Linux:
Both Alex (alc6379) and I moderate a very good Linux-oriented tech support site at www.justlinux.com . Check out the site and register as a member; we've got a lot of very knowledgeable members over there who are more than willing to help you make the "learning curve" less steep. :)
DMR
Wombat At Large
7,229 posts since Dec 2003
Reputation Points: 221
Solved Threads: 370