Hey folks. I basically want to make up an editor, though it isn't going to be very complex.

I'm going to use VB6, though it's been a while.

I'm wondering about a few things:
-Is there any way I could load in a graphic (would like to do PNG, but other formats would work) that has the individual tiles in a sequence and then pull a specific 16x16 area of the graphic and display it on-screen? I could just take a simple screenshot of the tiles and crop it down so the tiles are there and use that. The only other approach would be to edit out and save a bunch of tile files, which I'd like to avoid doing.
-I also want to have a textbox I can paste in my various tile ID #s into so that way I can paste and then load/interpret. Basically, is it easy to parse out characters such as everything except: numbers, letters A-F (case sensitive), dollar signs, commas, carriage returns? I'm dealing with hex numbers.

I've done a simple editor before, but I just was hoping someone could give some info on those points as I've not done VB in a while. Thanks.