First, go to the Gallery page at:
http://www.volksfolks.org/gallery/(should open in a new window so you can follow along)
Scroll down to the bottom, and click on the "Login" link. It will ask for your username and password, you can use the same username/password combo you use here on the forums.
Once you are logged in, it will take you back to the main page of the gallery. Find the album you want to add pictures to, (in this case, the Bug-a-Paluza 8 album in Events) and once you're there, scroll down again and there's an "Edit" link. Click there, and over on the left there's an Options menu. One of the items is "Add Items", so click there.
You'll see several places to add pictures now. Click the Browse button to find a picture, and it will ask you to locate it on your computer. I believe the most you can do at one time is 8.
You can optionally add a caption for each picture, otherwise it will use the file name as the caption. Once you've selected some pictures, click the "Add Items" button and wait, it may take several seconds depending on how many pictures there are and how big they are.
Once it's done, you'll see a page that says "Upload Complete". That's it, your pictures are in there.
Let me know if this covers it, or if you get stuck somewhere.