I've enabled all options for avatar selection. However the gallery option is blank because I haven't loaded any into the gallery. If you have an avatar you would like to use and for some reason don't understand how to post it, just place a message in the questions forum and I'll add it to the avatar gallery or otherwise tell you how to get it on the forum. I have left the gallery blank because most premade avatars suck; if you have a particularly good avatar to add to the gallery let me know and I'll place it on there. I may get bored later and make some myself.
If you have an idea for an avatar in mind but don't know anything about how to make one, time permiting (which I have a lot of right now, summer break, yippie), I can make one for you or maybe another member will.
IMPORTANT: If you are linking to an offsite image for your avatar please size it down to something close to the 80x80px. I tried posting my avatar that way w/o resizing and it took up half a screen. I expect that members will be responsible enough to manage their linked avatars to an appropriate size. Please don't make me have to tell you to change it because it is too big.
If you have a large image that you want made into an avatar it can resized it in a matter of minutes, just link to the image in the questions section and I or another member will adjust it for you.