Computer controlled servo

I want to make myself a simple project where i can control 2 servos with my laptop/computer.

I could connect the PIC via RS232 to the remote terminal and then the PIC controls the servos. For the user interface, I would rather prefer to use a more user friendly one, such as one made with VB. how do i interface my VB UI to the serial communications between the computer and the PIC?

Also, is there anyway to control the PIC/ servos using USB?

Interfacing VB to a serial port should be as simple as reading the basic I/O functions described in your compiler, they're standard.

how do you do that?can you point me to some website or something which gives instructions?