I've never had much joy with MAME & other emulators, being a Mac user, but would like to now buy a 'mini' PC purely for emulation purposes. So I have a few questions please, as I'm shite with PCs.
1) Would this be able to play emulators OK, without any problems?: http://www.ebuyer.com/product/261509
Depends how you define problems, could it run all the emulators out there, then yes, but it will in no way be fast enough to run them at acceptable speeds, especially some of the more demanding games in MAME...should be okay for SNES, Megadrive and early 8bit computer emulators though...
2) How do I connect up a Xbox 360 pad? do I need a dongle or something?
Just plug it in and let windows download the drivers for it...
3) Where would be the most reliable place for tutorials or ROMS - the ones for which I own, of course?
Thanks in advance for any help
You will have to use Google for that, but you will find everything you need in 10mins....
But TBH i really wouldnt bother with that PC, you will only be dissapointed at the speed of the emulators using such a weak CPU and Gfx combo.