iBook G4 external display

Hi y'all, it's my first post here; glad to be a member of this fine group
My question is this: I got an 1.33 Ghz G4 iBook logic board, given to me as a working part. However, nothing else that goes along.
I do have all the basic cabling such as speaker and power button, flex cables and such. Also got myself a new external AC power adapter.
Now, i do not intend to use this as a laptop, thus, i will not be looking for a battery, just AC use.
However, there's a big problem, i've no screen. I know there's this software hack that allows to connect an external display, in order to have a "mirroring" desktop. I s'ppose that'd be achievable if i had the original screen to actually do the hack, but i don't have it. So, is there a way that i can just directly connect an external display and completely forget about the internal one?
One more thing, suppose i can't do what i have in mind, if i actually found and borrowed an internal display, would i be alright if after the hack i give the internal display back to it's owner and continue with the external?
Thanks a lot!

Gee, thanks! I hope that works. I'll get a hold of that adapter and we'll see how it goes. I simply hope that the board does not need to detect an internal screen first...