How to create a table of dates?

[mos]

This one has me puzzled. All I need to do is create a table of dates, one 
date per row, from a starting to ending date.

So if the date range is '2001-01-15' to '2003-04-01' then it would generate 
approx 800 rows with dates between these 2 ranges. I can't seem to figure 
out how to do it without writing a program. Is there a way to generate 
these rows using just one sql statement? Or am I relegated to writing a 
program to generate these dates?

TIA
Mike