Installing a PCI Graphics card into a Lenovo M52

Well my card arrived today and its now in the machine and working, there was a bit of fiddling around to both physically fit it and to get to working properly in Windows but as promised heres the walk through.

Open the case (use the buttons on the side).
Remove the riser array (I had to use a screwdriver here).
Fit card on riser and replace riser array.
Close case and put video input onto PCI card.
Boot machine and enter BIOS (press enter).
Press F1, go into Devices then Video Setup.
Change "Select Active Video" to PCI and press F10 to save settings and exit.
Boot, if boot fails enter safe mode.
Enter Control Panel and Disable all Intel video drivers.
(if machine still wont boot then update ATI drivers from cd)
Boot machine, it should now login with your new card all working.

Lenova M series upgrades you can't do!

Do you own an IBM/Lenova ThinkCentre? M series? Is it an M52? An 8215? A CTO?
Want to fit it with a PCI Graphics card better than the on board 128 Meg piece of crap it has?

Well you can't! Because your PSU won't handle it.
The machine only has a 225w PSU and every graphics card above 128 Meg needs at LEAST 250W.

So your fucked. Just like I am. This means I won't be playing Portal until I buy a new computer.
So basically never then.
Thanks to the wankers at IBM for fitting a PCI slot for graphics & for fitting a FUCKING low wattage PSU.
WANKERS!