Hi Imran
If you are using WIC-1T card then you must use Cisco 60-pin "5-in-1" connector.
This connector is DB-60 on one end and can be V.35, RS-232, RS-449, X.21 or EIE-530 on the other end depending on your needs.
In your case its V.35 the other end so you can make use of normal serial cable.
when you are using WIC-2T then you must make use of Smart Serial cables which comes with different shape/size.
do refer the below link for more info on the same..
http://cisco.com/en/US/products/hw/modules/ps3129/products_tech_note09186a00800b0859.shtml
regds