How do I upload a custom avatar? All I see are the predefined avatars, but no option to upload on. I see other forumites with avatars that are not from the predefined list, so I know it must be possible.
Dameon, Custom avatars are one of the perks we offer for those who sign up as supporters. A complete listing of these bonuses can be found here. Hope this answers your question, and hope you'll give it some consideration, as a good part of the funding for the site comes from members!
Custom avatars are reserved as a perk for TrainBoard Supporters. We have an artist on Staff who creates them, for anyone needing such help. For more information, please click the "Upgrade" button in the orange bar at page top.