A discussion of a university library's use of Web conferencing (real-time synchronous instruction) which addresses the questions (1) Is Web conferencing a viable option for distance students in online only classrooms? (2) Do faculty and students benefit from this type of instruction? Four different scenarios are presented with assessment results gathered from surveys and debriefings. Scenarios range from use in an online-only class, to one-shot sessions with faculty and students, supplementing week-long library instruction sessions, and one-on-one sessions with students in Taiwan. (Contains 4 figures and 1 table.)