Request: Real-time collaboration application...

I really don't know if this belongs here but I thought eightforums.com would be perfect place to post/ask this, so here it goes:

Do you guys know of any software application (free or paid) that can enable real-time collaboration between multiple local PCs for creating/editing different types of files such as: Documents (Word, PDF, PowerPoint, etc), Images, Whiteboard functionality, etc... I have absolutely no experience with any of this so feel free to post any ideas, or things that I'm missing here.

Thanks and please reply soon!

I'm not sure about real-time collaboration but I managed to find this link over at Microsoft which shows how you can collaborate using SkyDrive and Office.
SkyDrive and Office: 7 tips for full-powered collaboration in the cloud across PCs and Macs

Yeah that seems like a good option, but I was looking for more of a real-time offering, something that makes perfect sense for running on multiple local PCs, for real time collaboration on the fly.

Thanks though.

no problem, hope you find what you are looking for!