Are you going into "generate image tags and html codes"?
That is where you prepare your images for placement in some sites. You don't have to do this here.
I'm going to do one and type it in as I do it....
Go to photobucket and left click on the image you want to place.....
This will bring it up in it's large format.....
Right click on the image, a menu should appear. The last option on the menu is "Properties", left click on properties....
A "Properties" box will open. The third item listed is "Address (URL)"....
Run your cursor over the address to highlight it....
Right click on the highlighted area and a menu will appear. Select "Copy" from this menu....
Return to A2K thread and click the "Preview" button right below the "Quick reply" box where you type in your response (You will have to type something in before it will let you "Preview")....
Now, above the response box you will see a section that says "Mesage body" that allows you to change your font to bold, italic, underlined. There is also a button that says "Quote", "Code", "Img", and "URL".
Click the "Img" button and a box will pop up that says "http//:"...
Delete that.
Right click on the box and choose "Paste" from the menu that pops up.
This should paste the image's address into the box.
Click "Okay" and the image's address should appear in the response box surrounded by