>Does the hosting service have to host the VFP runtimes

They need to have the runtime yes, but only for the COM DLLs, which is a little less than usual. Like on the MS site for needed VFP and COM supporting files.

>then and do they usually allow you to register your custom components or do you usually need to co-locate?

Usually? Couldn't tell you, I know we co-locate our server. Or you should be able to find a specailized ISP to do IIS stuff and maybe FoxPro for you.

You can also try getting a hold of and see if you can work something out. http://www.ursaenterprises.com/