There was no built in gallery prior to 7.x series of forums.

Only external third party options.

Your best bet is to look at a current 6.5 forum for feature options; 7.x added quite a few from both products; and some that are new to 7.x as well.

Several items are still to be added into 7.x - these will come with time.

7.x was a massive rebuild, and I am sure that before long threads will be one of the most feature rich forums available for one set price.

Keywords: One set price.

Other forum solutions may offer these same features, but charge additional fees for "addons"; whereby we include them all for free, in the base product... Not to mention, our vast modification community, UBBDev.

does vers 6.5.4 allow upload of personal avatars?

i registered at Beyond Compare but do not see that in my profile prefs.
http://www.scootersoftware.com/ubbthreads/ubbthreads.php

how about in post images?

i want to buy but i really want everything you have now PLUS i really need Expand/Collapse posts indices.

6.x is no longer developed, so you're stuck with its feature set unless you want to upgrade to a newer version. Features left out of 7.x where left out due to unacceptable load they caused on servers; they will be (eventually) added back once code can be streamlined.