Quote Originally Posted by dreammanor View Post
Two months later, I will use VB6 to develop a IM software. So I'm collecting all the technical information about web development, mobile-phone development and communication development.

I have been working on local database application development for many years, but I have no experience on Web/Mobile/Communication development. Using VB6 to develop IM and Web applications is a huge challenge for me, but I'm still going to try it.

Finding the right solution is the most important thing, but now I don't have any clue.
Who's the audience or the target for whom you are going to create an IM platform, what is your goal?
Is it a hobby project or a commercial project?

You can't use VB6 to create mobile (phone/tablet) applications. Won't work.
Use VB6 to create the huge backend for handling/storing/retrieving, why would you??