[Tilecache] a stupid question

[andy]

First of all,
thank you to all tilecache developer, especially for 1.4 release.
Here is the question. I have read about "To use TileCache to seed your 
cache". Do I must use these steps to prepopulate the cache folder with 
all cache tiles I want to use?
When I run command like "<path to>python ./Client.py <url> <layer> <zoom 
start> <zoom stop> <bbox>" I'm not able to see any tiles in my cache folder.
Probably I have not understood what this command makes.

Thank you,

a