No, YOU'RE stupid for knowing that gims exists and not even trying to look for tutorials or youtube video tuts.
How do you think every other GIMS+OpenIV user learnt them?
We used our brain. If you
have followed tutorials then you
totally made that clear to people. 
(< that's sarcasm, not sure how well people detect that in text)
People don't reply to topics because it's simply not something the feel like doing at that exact time, either that or they feel that replying to all the people who don't look for info tutorials first isn't worth replying to. /rant
Sorry for being so hostile but it seems you could have done your homework (meaning searching for tutorials and mentioning your progress with them when you posted this topic) before bashing the guy who actually made tools that allow importing/exporting IV's map possible.
Anyway, i posted here for a reason so;
here is a tut that should show what you need. 
Edit, damn that's only for single objects not multiple.
Keep experimenting and using OpenIV+GIMS untill you figure out how, that's what everyone else does. I'm not posting a howto here because it would take an hour to write and test if i've written all steps correctly.

Edit: V lol, not the first time i have though.
Edit2: @AB i was using the V as an arrow pointing downward to you AB.
This post has been edited by Frank.s on Wednesday, Feb 22 2012, 15:34