Looking for good wireless card for old computer

[gougeface]

Hello, My sister got a old dell computer but she doesn't have internet so I need some ideas of what wireless card I need to get.

I prefer newegg.com for my site.

 

[Emerald]

http://www.newegg.com/Product/Product.aspx?Item=N82E16833124342&cm_re=pci_dual_band-_-33-124-342-_-Product