Found a KB reference

Notes/Domino 8 Forum

Subject:

Title: File transfer and screen capture icons not available in Sametime client embedded in Notes 8

Product:
Lotus Sametime > Chat > Versions 8.0.2, 8.0.1, 8.0, 7.5.1.2, 7.5.1.1, 7.5.1, 7.5

Doc Number:
1328513

Resolution:
Enable "Allow all Sametime Connect features to be used with integrated clients" in the default policy for the Sametime server.

Access the Sametime Administration over the web: http://sametimeserver.com/stcenter.nsf
Log in as the system administrator.
Click the "Administer the server" link.
Click "Policies" in the left-hand contents pane.
Click the link for "Sametime Default Policy."
Enable "Allow all Sametime Connect features to be used with integrated clients"
Restart Sametime Server

Feedback response number WEBB7S3QYV created by ~Nicole Lopamanflar on 05/15/2009