Producing customized tickmarks when producing a graph using "curve"

Hello!
I am using function "curve" to create a line graph.
I was wondering, if it's possible to "turn off" the default tick marks
and introduce those tick marks in specific locations.
For example, currently in my X axis tick marks are (automatically) at
10, 11, 12, 13 but I want them to be in 5 specific locations, like
9.89, 10.34, etc.

Any hint would be greatly appreciated!

Dimitri Liakhovitski
MarketTools, Inc.
Dimitri.Liakhovitski at markettools.com