This paper presents a prototype tool called ACTS (Annotation Collaboration Tool via SMIL), which was designed to meet the user requirements of a distributed, collaborative team performing remote analysis of robotic welds. ACTS is a web-based collaboration tool, based on open standards such as the W3C (World Wide Web Consortium) standard web content technology Synchronized Multimedia Integrated Language (SMIL) to provide a framework of temporal and spatial synchronization for multimedia data streams. An annotation facility provides for asynchronous collaboration among colleagues. ACTS is based on the success of NIST?s S2M2 Java applet-based SMIL player, along with some extensions to the SMIL 1.0 specification. Future work is also discussed.