Im trying to make this kinda filtered lead sound

http://uk.youtube.com/watch?v=b8KDwAeQ6YQ
Starts at about 5 seconds sounds like its filtered but im not sure how if that makes sense...
Ive got loads of virtual synth plugins all the NI stuff.. the only hardware synth i got is a microkorg im looking to buy a CS01 and im running Logic Pro 8 on a mac pro.
Thanks
