wmarshall4016,
Download and install in this exact order...
Dell System Software, v.7.0.2, A02
Intel GM45 Express Chipset Family, v.9.1.1.1023, A00
Realtek RTS5138 Card Reader, v.6.1.7600.30109, A00
Atheros AR8151 Ethernet Controller, AR8152 Ethernet Controller, v.1.0.0.43, A00
Go to Dell Warranty Status enter your service tag, click on original configuration. There it will be listed which wireless adapter you have installed. Then go to Drivers & Downloads enter your service tag, selct your operating system, under network, download the drivers for your wireless adapter
Then download and install Dell QuickSet, v.10.6.2, A00
Places to look to see if your Connection is enabled
Rick