fan question

[BarboBot]

 

[BarboBot]

ok here is my situation up until recently i could find the fans i was looking for at local shops so i had never ordered them. I ordered a planaflow 90mm fan with my xp-90 heat sink this time i got the fan but it didn't have the connectors for it (4 pin or 3 prong) not having time and being in a slight rush to get my comp running (had deadline of BF2 launch date) i just went out and bought an Antec Tricool 92mm (much weaker than what i wanted averaging 2100rpms ) i'm worried about trying to order another cause i can't figure out if you can buy an adapter to hook the two wires into or something (local comp shops said no/they didn't carry them). I'm wondering if anyone else has had this experience or if i just got a bumb fan that needs to be returned/reordered?