Shopping list:-
5M 3528 SMD 600LEDs UV ultraviolet no-Waterproof flexible LED Light Strip 12V, £9.97
1:3 Ratio Heat Shrink Tubing Tube Sleeve Sleeving Wrap 50cm 0.5m Metre Black, 6.4mm £0.99p
Male-Female Cable 2.54mm 20CM Jumper Wire Ribbon For Arduino Breadboard, £0.99p
10 x Male Molex Pins for PC Connectors Crimp pins for PC Power Supply, £1.49
50pcs 5mm UV 1000 mcd LED Bulb Light lamp 2pin Round Top, £0.99p
Measure the strips of leds, then solder the jumper wire to end of strip so it can go round the corners easily, then finish of with the heatshrink, this pic is from when I made the mistake of buying waterproof LED strip, within a couple of hours after turning on your PC the heat from inside turns the LEDs yellow as the silicone melts, so that was a £10 mistake
Also I got the legnth of the wire perfect on the second time so no slack in the corners of the case.
The 600t has a perfect little lip that runs all round the edge that you can fit the LED strip into, hard to get a good pic now without pulling the case to bits again
I started the LED strip top right and went antic-clockwise round the edges like so.
The top strip was done twice, 1 pointed inwards in the lip and 1 pointed downwards on the ceiling of the case and finishing with a small strip over the top of the rear fan giving sideways illumination, again hard to get a decent pic without dismantling
There is a couple of holes at the top right of the 600t chassis that allow you to run cables above the DVD area to the backside where I hooked up the LEDs black/red power cable to a spare molex using the crimp pins
For the front panel HDD activity and Power LEDs was simply just unsoldering and re-soldering the new UV LEDs in place. The HDD activity LED is actually on top of a little plastic stand-off (not shown in pic). Another tip is to wrap the HDD activity LED in a bit of tinfoil so it reflects the light upwards (the HDD activity light hole on the 600t is tiny) as when I reassembled the PC you could barely notice the light, so disassembled again and added the tinfoil and now it's much brighter.
That's it, took about 4 hours on a Saturday afternoon to complete, well 2 Saturday afternoons really as I bought the waterproof LEDs to begin with