About once every few hours, I lose my internet connection.

Just changed providers from DSL to Cable - no change.

When it happens, I just right click on internet connections in the system tray, and click "troubleshoot problems."  The troubleshooter fixes it every time - diagnosis is something like "reset wireless adapter."

Is the wireless adapter a card or component that is easily replaced?

How do I check it?

How do I identify the make/model, etc if I want to replace it.

Under my system configuration details, I see: 

PN --- 63FJ5  1  Module, Information, No, WIRELESS WIDE AREA NETWORK..., Hanks

???

Dell Studio 1558

Windows 7

64 bit