Dynamic App design

Guys,

I am about to commence coding an application that I already have working but needs a total redesign. The main problem with my current app is scalability. At the moment, I have comboboxes for example, populated from a database table at runtime, the dbase field and table names expicitly defined in code. I have dozens of these.

What I need to be able to do, is first of all map controls to different datasources dependant on customer requirements. I don't want to specify/name database fields in my code, nor should my database fields be too descriptive. How do I do this ? I am not familiar with what must be basic design techniques that will do this.

Secondly, I would like to re-arrange forms/input screens, again dependant on customer requirements. Is this just a case of having different resx files for each customer ? Whats the best method to do this.

If anybody could point me towards some useful reading material that would help me understand the best way to do this, it would be appreciated !

Thanks
Bob