4 pin to 3 pin Molex connectors will convert them easily. Find them on ebay for cheap:you just plug into a molex connector on your psu
theres 8 molex connectors on that psu so it shouldnt be a problem
http://www.ebay.com/itm/NEW-FAN-ADA...S_Power_Cables_Connectors&hash=item3a79f09284
or
http://www.ebay.com/itm/2-PIECES-OF...497?pt=LH_DefaultDomain_0&hash=item3a737076f9
It is trivial, and I admit that it's an issue I have yet to overcome (being overly fearful/paranoid about things that clearly don't matter). I think though I can pinpoint the the moment or at least know when, where and why. I had a Raidmax case, only lasted just shy of four years. The side fans stopped working after two, which may have contributed to the motherboard getting hot enough and fry, but that happened three months ago. I'm glad you're are experience are you are, and the the advice given thus far. As for myself, I never completely built one from scratch, having no previous experience doing it all. I may have installed a CPU, RAM modules and motherboard, but not every single component. I have no experience, but now's a good a time as any for me to start. At least I know what brand NOT to choose.
Better late than never. The manual for your motherboard should give you a good idea of how to attach everything step-by-step (you need to read it first before doing anything). Current motherboards come with posters which illustrate these steps as well. I built my first rig in 2007, and then 4 more after that. It's all about trial and error. On my first build, I had 3 motherboards that came in DOA and fourth one had two memory sockets that were DOA (which I eventually RMA’d with the manufacturer). I could have given up when receiving my first mobo that was DOA, but I stuck with it, accumulated much knowledge by learning from my experiences, I then applied that knowledge into building my first Hackintosh, and aside from reading the text book, I knew enough to pass the A+ test and receiving my CompTIA A+ certification. You have to be patient when it comes to building rigs, because you may not get it right the first time, and it may not be your fault some of the time. I guarantee you that you’ll gain a sense of satisfaction and independence, knowing that you put something together that is solid to your own liking/customization without relying on purchasing a mainstream model PC with factory-based specs and it will be well worth it in the long run.
S/N: I got the following fans for my case and passive heat sink in Oct 2010 for around $18 (shipping included) and they're still going strong today:
http://www.amazon.com/gp/product/B000O8I474/ref=oh_details_o02_s00_i00?ie=UTF8&psc=1