>When you use web services, can it also be used for desktop applications in Visual FoxPro if your network is hooked up to the Internet?

You mean can VFP consume webservices if Internet access is available.
The answer is (in my opinion, a qualified) yes.

You're stuck with the (deprecated) MSSOAP.SoapClient which can be fiddly to use with, for example, web services requiring a logon and extracting the results may not be easy for a webservice returning complex results.

IIRC, there's a class that comes with VFP ( webservices.vcx? ) which simplifies things a bit.
If I need this now I use .NET to handle to communication and create a wrapper....