The feature to upload custom avatars is turned off to protect the forums from silly people that have a history of trying to cause harm here
But custom avatars are still possible as you can see with Dennis, Beaker, Sheba .. had a maple leafs one a while back .. Goswinus likes the Elymer Fudd Man in Black thing etc. BTW Dennis didn't ask for a custom avatar .. its just that the original one he picked was sooooo ugly that I couldn't stand to look at it any more
He kindly let me change it
Anyhow .. please let me know what you want and if it is within reason I'll set it up for you .. maybe even make it better
You can send me a zipped copy (zip file format)of an image that you want or tell me what you want. email address at "contact us" ie if it is spiderman or whatever just say and I'll try to get a good one done for you.
oops sorry forgot to mention Picard's .. the Captain has a custom also. All of the avatars that I see selected by members (the choice is out of approx 1000) have been really cool