selected specific fields from a search

I would like to load a list of ALL our customers.  Currently I'm doing it like this:

 CustomerSearchBasic csb = new CustomerSearchBasic();  SearchResult results = _service.search(csb); 

This takes FOREVER

Part of it could be the response SOAP is over 300Kb, although I can't tell how much of the time is spent on the query and how much is spent on data transfer...

The only fields I really need are the internalID and Company Name, but it appears that when you search for a customer you get all the fields which is expected.  I can't find a way to select what fields I want to retrieve.  I would think this is possible as NetSuite is concerned about efficient use of WebServices and not overloading the server.