I have no idea what the "go advanced" window is or how to get to it.
I'm sure there are better written instructions than I can provide, but here's a shot at it.
If you're in the "quote" window, you're already in the advanced setup.
But if you're just looking at the normal reply window at the bottom of the page, just below it you will see the "post quick reply" and "go advanced" buttons.
They're right down here... V ;D
After clicking on the advanced tab/button/thingy or a "quote" button in a post, you will see an "additional options" section below the typing window.
In there note the "upload photos" button. Press it and a separate browser will pop up. At least it does for me in either AOL or Firefox. Pretty sure it does it in most Explorer-based browsers, but others will have to let you know about that.
I have had the new browser open up behind the existing one once or twice (which really messes with you!) but usually it pops up in front.
In the new window are multiple "Browse" tabs. Click on one and navigate to whatever file you have your images in. Either double-click on the file you want to upload, or single-click and then hit Browse again if you want more files.
If not, simply hit the "upload" button and wait for the file names to show up next to your earlier "upload photos" button in the main browser window.
Once they're there, there are two ways to insert them into your post. I only use one however, so that's the way I'm going to talk about.
Above your typing window, in the top row next to the smiley face is a paperclip with a drop-down arrow. Click there and your file(s) will show up.
But the blinky-thingy where you want the image to show up in your window, then click on the image under the paperclip you want to insert. Now it's there, but it's highlighted so don't click any other keys until you left-click somewhere in the window, or hit an arrow navigating key. Most other keys will delete your entry.
Once the upload code is showing in the place you want it to show up, simply click on the Submit Reply button. Done!
Sorry about the segué off of the subject, but I like photos and videos so much I figured it was worth talking about here too!
Good luck.
Paul