It's actually very easy, at least for me. After you have ksirc started up, right click on the docked icon (should be near the lower-right unless ya moved it) and select "configure ksirc"
Once you have that window up, click on "Auto connect" to bring up the auto connect setup. First you gotta choose a server. Type it in (ex: irc.starchat.net), then click the "add" button. Select your new server from the list, then fill in the channel field (ex: #myroom) and click "add" again. Repeat as often as necessary.
You can add as many servers and as many channels as you want. I hope this helps
