Two options.
Buy a 5 1/4 fan control unit that has molex connections for fans and speed control of them.
Or look on e-bay for a modular cable from one of your power outputs that converts to a molex connection.
for example using the 6 pin Pci-e-12v, if one is free. from the back of the Psu, with a cable to molex click on link
Six or eight pin depending on if you want to tap off the modular sata power feeds, or Pci-e 12v fees of the semi modular PSU.
You should get a range of cables with the Psu depending on what you wish to connect. most come with a Sata power connectors or as an option mixed sata power with molex as well when you buy a semi mod as part of the cable options.
http://www.ebay.co.uk/sch/i.html?_odkw=psu+pci-e12v+to+molex&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.Xpci-e12v+to+molex.TRS0&_nkw=pci-
e12v+to+molex&_sacat=0
Click on this link to see in the picture what they provide you with with as part of the cable options that come with cx 600m psu.
http://www.vortez.net/articles_pages/corsair_cx600m_review,3.html
Think your problems solved eh !