Alright everyone

Sorry if this is a stupid question like but I'm in the middle of a planning process as part of a group that we are going to create a application. The application will be to help other people with any problems there having on computer whether it be with any programs/software or a technical issue.

The aim of the application will be so that the people with a problem will be able to have an interactive chat with people who can help it and hopefully we can see their desktop/problem without controlling their computer.

I know it's probably sounding odd but I was wondering what would be the best programming language to use for that and which ones are a complete no-no.

Thanks for any help.