Cold Fusion Environment Setup

We have to maintain few applications (on Cold Fusion / Sun Solaris (or NT) & Informix) which are at the remote site. From our office, we have the network connectivity to the client's place. We wish that we are able to access the development environment at the remote site itself for maintaing this application so that we do not maintain source code at 2 locations. And, at our end here in our office, we just want to load the Cold Fusion clients on the machine. My question is: a. Is this possible? b. What all should be loaded here at the client's machine (in our office) and what all servers / other system software should be loaded at the remote site? c. Is there something special that we need to take care of while accessing the development environment at remote site? d. Is there any special Configuration Management tool? Or can we use Visual Source safe as the Configuration Management tool? e. What all types of files exist as the source code in Cold Fusion? like in Microsoft Visual Basic we have Forms, Modules, Class Modules and so on... Please help