What cable do I need?

[duteberta]

Wanting to connect new 2011 i7 SSD iMac to my 2009 iMac to use as a monitor.

Apple says I need a Mini Display Port male-to-male cable. But when I go to the Apple store I cannot find that cable. Can anyone help me get the correct cable or maybe let me know if I can get it at Best Buy or any brick-n-mortar.

Thanks

 

[Dresevski]

This might be a cheaper option:
http://www.monoprice.com/products/subdepartment.asp?c_id=102&cp_id=10246&cs_id=1024602