Thanks guys ^_^
First off... no, I truely do not have enuff space in the basment shop / arcade. However... Im still able to build most things by moving stuff arround a bit.
Witchboard is correct. For cuts where the piece is very long or cumbersome... an adjustable roller is a good investment... else a good freind to help out. I will be adding a swing arm to serve the same purpose - as seen in the proto drawing.
The width wise length extention is needed more - so as to be able to better measure longer pieces, and to lock the straight edge guide in place so that the cuts are easier to make.
Spystyle, Thanks!

The saw I have is actually a 10" 'skillsaw' table. It came with a mini metal extention... but it just wasnt enuff. I think the metal extention really heped a lot in making the two parts join up tho.
The thing about the project that made it tough... is that in order for the clamping device to hold... it had to have the exact shape rails as the ones on the table. This table had a 1" * 1" square metal tube on one side, and on the other side... the clamping device needed a lip to clamp into.
I could have just routed a groove... but I thought that the metal parts would help to keep accuracy - as they wont bend and warp like wood. Also, the clamping pressure may have easily compressed the groove lip - making it unusable.
I found a metal "L" that was the perfect size to match the bar clamp depth. I routed out 2 sides of the 4*4s so that it was level with the surfaces. I also routed out a deeper groove on one side, because the clamping bar hooked deeper than the tickness of the l-bar.
So yes, the wood I used were 4*4's - which is funny cause they measure 3.5" * 3.5"'s. I chose these because they also warp less than thinner wood... as well as being stronger and easier to mount things to.
The metal 1*1 had to be a certain distance away from the 4*4's - so had so make some custom spacers, than ran bolts thru them to hold it all together. Had to cut thru the front of the 1*1 with one of those taper type bits.
Ill post a few more pics when time prevails.