[Typo3] EXT dev

[Pierre]

Hi there,

I'm developing an extension and i'm in trouble with how to put some TS 
by default ?
i have this into the setup of my template : 
plugin.tx_rspphotomanager_pi1.basePath = fileadmin/webphoto/
and i wanna put it in my extension directly via the setup and constant 
text files ... But there's something i surely misunderstood cause i 
allways have nothing pass to my class.
Is there any hint i should know ?
Thanks for any information please ?
Cheers
Pierre