How to post games

I can't figure out how to post a game I have played without manually typing in each move; the paste you pgn isn't working for me, and the paste a string is just giving me the last position in the game.  I also can't open pgn files on my computer, is there a program I need for that?

Thanks in advance

Right click the PGN file and "open with" notepad. Copy the whole lot inside, then paste in Chess.com's diagram editor.

Thanks alot, that worked.

Here is a step by step guide for posting your games using PGN files, click on the picture below to go directly to the guide: