Computers that connect to the same wireless router can communicate with one another through a "homegroup," a Windows 7 feature that allows PCs to share files and printers.

How to Connect an HP Desktop to a Wireless System. HP produces a full line of desktop computers designed for businesses, and most of them connect easily to a wired router or switch on local network.

Having problems with your router? You're not the only one. Here are six common router problems, and how to fix them.