Ok i got myself a drill from a neighbour and drilled a cross with a large circle of smaller holes in a circle of the cross in the base of the pc,(looks really good) which i then screwed a 8cm fan to.
Initially it was much cooler, cpu was at 32C and the GPU was idling at 49C - 52C, so i got a little decrease in temps.
I also changed the thermal paste on both the CPU and the GPU, but now its running a little jerky in small 10 second interludes when the graphics on particular games gets heavy, it literally feels less stable than it did, I dont think this is down to your suggestion of having a fan on the base of the pc, i think its down to the fact I changed the GPU's thermal paste, the CPU's temp is still low, and has peaked at 51C once and then it promptly goes back down to 44 ish.
To be honest the paste on the GPU was awful, badly spread and a lot of it was on the surrounding area around the die, I'm not sure if tis supposed to be like that so i just popped some on the die itself and left the surrounding green area where the little metal pieces are on a green background.
I'll take it apart tonight again and ill take some pics and upload them if you would like to see what i mean.
Spk soon, hopefully you'll get back to me b4 tonight. (18:00.)