Hallo Billy,

unfortunately I have no link, but may be you find what you want at microsoft's homepage?
Also, I do not have full code for your task.

You could use something like this, but be aware that this is no ready code, at all ! Only to show, how it looks like:

OPEN "COM1:2400,N,8,1" FOR RANDOM AS #1

DO

 IF LOC(1) THEN
  Recieve$ = INPUT$ (1, #1)
  PRINT Recieve$;
 END IF

LOOP

CLOSE

These lines open serial interface and in an endless loop new recieved data byte is moved to Recieve$ string variable. Afterwards Recieve$ is displayed on screen.
Of course, your program should also store recieved data bytes into a file, for being able to manipulate it.

May be that some other forum member could give you further help?

Bye,
Kai