What I did when I brought in a second rabbit, wasintroduce them in the car. I actually brought my first rabbit in thepet carrierwith us, so the two buns could see each other, butbe in seperate carriers. When we got home, we opened the carriers inthe bathroom, which was neutral territory, as bunny #1 (Chompers) neverwent in there. Of course, they ignored each other. Have a water bottlehandy just in case though. Spray them if they start to seriously fight.
We hada second cage for Abby (bunny #2) to start off. Both ofthe cages were near each other, but not next to each other, so therabbits could see each other. It was love at first sight with ourrabbits and after abouta week or two, we had them both in thesame cage. We didn't just shove them together though, we waited it outto see which cage they used more before getting rid of the second one.We later broke that down when we built a new cage for them. Now theyare totally bonded to each other. That hasn't changed the bond with methough, they still love it when Mommy sits on the floor for pettingsand treat time.
Good luck! It wasn't as hard as I thought when introducing Abby toChompers. She was only 7-8 weeks and he's three. Maybe it would havebeen different if we had brought in another male, but I wanted a femaleanyway. Chompers has long since been fixed, so we don't have to worryabout any babies. We're waiting until we move to do Abby, as it's goingto be an adjustment for her after a five hour drive and a whole newapartment.
Ok, long enough post, but I hope that helps!