I was just wondering if I could put my settings that way so that I always enter a certain chanell automatically when I connect or something close to this idea. Can nebody help me out.

In the mIRC options dialog click the + next to Connect on the left and select Perform, check the "Enable perform on connect" box on the right and add /j #channelname to the text box below.

For v6.0 and newer, check out this page for connection tips, hints and tricks

you also use your channel folder. a channel can be associated to a specific network or not and set to autojoin on connect