In ohn freebies, there's a texture changer with left and right buttons, floating text to tell you what slide/pic you are on, and it is configurable to be auto changed or manual. The script is modifiable so you can customize further.
Added later: and you can also just copy/paste script contents into your own object script to make it fully exportable
try 3: also on the ohn freebies (scripts modifiable) - media viewer with menu - 4-prim media viewer (web sites/videos/tutorials/etc.) with menu prim. Web page/video titles are displayed in HTML on the menu prim.13 links configured as examples. Titles and links are specified in a note card. Visitor just click menu prim button to choose what to view. Viewer includes NEED HELP button that gives notecard to visitors that need help with enabling media.
LOL. Hope that's useful anyway.