You need error checking, when i try to view the post after the last available one it crashes out instead of realising it's at the end of the list, just do a quick bounds check and it should be fine. also if i try to do something else instead of waiting for whatever i just clicked to finish i get an error that it's busy and it crashes, just set it up so that on an error that it's trying to do something else it will kill the other connection and handle the new one. once these are taken care of it looks like a pretty good program.

[edit]Just a second thought, if you used any components other than the base ones include a list at least so people will know the dependancies. and what version of vb is it? in case people don't have the newest libraries, if you have the professional version that builds them into the executable then great but if not it's something else to keep in mind.[/edit]