I want to be able to write a report that shows a timetable block between certain times in a report. Any ideas?

Use Between [Enter Start Time] And [Enter End Time] in the criteria of the underlying query. When you start the report, you will be prompted to fill in these parameters.

You can even get the parameters to print on your report. Look here: http://www.access-programmers.co.uk/ubb/Forum5/HTML/000113.html

HTH,
David R

Depending on the complexity of what you aim to do you may want to use a FlexGrid control or try this simplier solution:
http://www.mvps.org/access/reports/rpt0018.htm

Alex