Does your slimline have wireless that is broken, or did it not come with wireless to begin with? We'll need the following information to help you:
■Is your broken wireless adapter an internal card (mounted inside the computer case)?
■If internal, what interface does it use: PCI, PCI-express, or other?
■What kind of wireless signal do you need? Wireless g, wireless n? For wireless n, is your router a dual band rounter (2.4/5GHz)?
The quick fix for a person unfamiliar with the inner workings of a computer is to purchase a USB wireless device and just plug it into an available USB port on the back of your computer. Here is a relatively inexpensive USB wireless adapter that can replace your broken wireless or add wireless if you don't have it to begin with (
link) and it can work with wireless b, g, and n.