I found a cable on ebay for $1.Came out to like 6 with shipping. I also found a brand new Dell bluetooth card on eBay for like $20.
"You know, the only trouble with capitalism is capitalists. They're too damn greedy." Herbert Hoover
"Don't project. Don't connect. Protect. Don't expect. Suggest."
"Quis custodiet ipsos custodes?"
I have a Dell Inspiron 9300 and purchased a Dell Bluetooth card off of eBay for like $20. It was really simple to install too. Depends on what kind of Laptop you have, you should be able to search the manufacturers website for any instructions or explanations you may need.