Yep, if all goes well (and I haven't heard much about it not), running Migration Assistant should finish with your MBP looking exactly like your MB, with login accounts, keychain, apps, volumes, prefs, everything running the same way. Just on your new machine. You can tell it to only do certain things instead of everything if you prefer. It's actually extremely cool IMO, and I'm looking forward to testing it out when the refurb 2.4 MBP I ordered arrives.
If for some reason you want to do it manually, you could use a network cable to transfer files, or better yet put the MB in target disk mode (start up holding T) and transfer via firewire, as if the MB was an external hard disk. This is how Migration Assistant does the transfer I think too (but automated of course!).