Ok, I've found a few ps that fit my budget, now if the dimensions are similar (to fit in the case) and the dongles supplied with the new ps match the old HP ps, it should work?...is there anything else to consider? :hmm:
Think I've answered my own question...looks like this will work
Thermaltake / PurePower / 430-Watt / ATX / Dual 80mm LED Fan / 20/24-Pin / SATA Ready / PCI-E Ready / Power Supply
within the budget, maybe I'll give it a try, if all else fails at least I've got a better ps.