Hi, where must I put the dlls files in the different operative systems?
I mean, in windows I must put them in the system32 folder, but what about in Linux or in mac os?, where should I put the libraries?
Putting them into the system32-dir isn't such a good idea. It's better to tell the VM where to look for the native libs like the examples that come with jPCT are doing it.
Instead of putting them in a specific folder, tell java where they are like Egon said. See http://www.lwjgl.org/installation.php.
I have jpct working in both Eclipse on Windows XP and IntelliJ on Suse 9.2 using the -D parameter for the LWJGL dll's and so's.