Well a lot of progress made over the weekend, spent a lot of time on it and am all but finished.
Got the computer mounted inside the table with the timber strips above, and some 100mm bolts, screwed tight to sit flush with the glass top. This method works real well. Still need to properly support the computer in there, at the moment its velcroed onto the timber but i'll probably get some 90 degree shelf brackets to hold it in there nice and tight.
The control panels screwed onto the side of the table nicely and feel very secure.
Some 6mm 'quad' strips gave me just enough height to make the lip that the glass sits on perfect height so the glass sits flush.
Here's it all being glued up:

Glass taped up and ready to paint.

Today i installed the ipac 2 and got it all wired up. Had to make sure the wire was cut nice and short and then kept nice and tidy so nothing hangs below the table.
Also installed a 4 port USB hub under there to handle all the USB requirements.
Installed a power button, hooking up the previously soldered on wires to a normal arcade button. Unfortunately when stripping the wires i managed to remove one of the wires off the tiny contact points, so its going to have to be re-soldered. I can still start the machine by pulling the top off, but will get around to resoldering in the next couple of weeks.
Once all that was done it was time to fire it up. A couple of hours spent configuring everything. Getting the joysticks to work was an effort but got there eventually. I had set up Hyperspin & Mame on another PC already so was able to just copy it all over. It all seems to be working well now. A fresh install of Windows 7 on the machine, and i get from power up to Hyperspin in about a minute.
Here's how she's looking now:



Played for a while tonight. Initial thoughts:
It is suprisingly comfortable to play. From the couch the height is perfect and so is the viewing angle. Player 2 doesn't have it so well having to sit on the floor. I think i'll need to make some sort of stool for player 2 to sit on.
I should have ordered the hard springs for the u360 joysticks, it does seem too soft. I am also finding in games like pacman if you let the joystick go it will flick back and obviously push slightly in the other direction pushing pacman in a direction you dont want to go. Is there a way to make the joystick less sensitive?
the split screen mode for horizontal games works real well. It means each player has only essentially half a laptop screen, but you're sitting that close that it is big enough.
The laptop speakers are actually ok. I wouldnt say its fantastic but you can definitely hear it. When i get my cheapie ebay speakers i'll give them a go and if sound isnt much better than laptop speakers i wont bother installing them.
Whilst the painted glass bezel looks awesome, it shows fingerprints really bad!!
Whats left to do:
Install speakers if they're any good.
Fix the laptop button soldering effort.
Install a power plug into the side of the table so i can plug straight into that and hide the laptop power cord up inside the table.
Install the 2 USB plugs that i've got to give USB access from outside the table.
And that's pretty much it, so i'm all but finished really.
I'll try to get some pics of the guts of it all too some time.