great mics - so those are a good choice.
Good that this camcorder has a 1/8" (3.5mm) mic stereo jack.
According to http://www.sennheiserusa.com/newsite/productdetail.asp?transid=G2-2 the base station connects to "the next step" using XLR connectors. You actually have two ways to go - though they are similar and depend on your future requirements.
A little bit of growth and camera mount-able:
In order to get the XLR connectors to fit the 1/8" jack, you will need an XLR adapter. juicedLink makes three different 4-channel field mixer/XLR adapters. I have one of their 2-channel adapters, and the preamps are awesome.
If you need to grow more, then a big mixer might be in order... I like Mackie gear. You can then connect the mixer to the camcorder either with a XLR/1/8" adapter cable (that is a lot of weight on the 1/8" jack, so be careful) - or through a field mixer using XLR-XLR.
I read through the GS65's manual pretty quickly - what I did not see is the camcorder's manual audio control. When a camcorder is under manual control there are typically some meters you can watch to make sure your audio level is where it needs to be. Without manual audio control, there will be no meters - this means you need some way to see what the audio levels are so you don't over saturate the audio - the juicedLink CX-471 gives you that visual feedback.
Since you did not tell us what you are capturing to video, I can't say if these particular Sennheisers are what you really need - but they are good mics... for recording people speaking.
I'm looking to get some wireless mics for my video camera, a Panasonic PV-GS65.
The thing is I just don't know what I all need to make this stuff work with the camera.
Here's what I'm currently considering. Three Sennheiser ew112g2 wireless lavalieres. If I order those, what else do I need to plug the audio into the camera. I was told to get a small mixer - I'm not looking to spend a fortune on one, what would be a reasonable choice? What kind of adapters am I going to require to make this plugin to my camera? Also, do I need to make sure to get different channels for each wireless mics or does that not matter?
Thanks so much for the help. I just have no idea what I'm doing with regard to audio - all I know is that I'd like the audio quality on my videos to be dramatically better.