Bobsys,
What seems to be the issue? I see you do not have a wireless adapter.
Download and install...
Intel Intel(R) WiFi Link 5300, Intel(R) WiFi Link 5100, v.tic TRWFW0986D , A01
Then download and install Dell QuickSet, v.9.6.21, A07
Places to look to see if your Connection is enabled
If that does not work, look at page 39 in the Dell Studio 1745 Service Manual. It explains how to access the wireless adapter. I would reseat the adapter and see if the system finds it or not.
Rick