Look for some different website files, there are some good ones you can find them on here using search or on the ragezone l2j section also using search.
The ACM or whatever its called files that usually come with packs can sometimes be full of security flaws so beware.
I dont recommend using virtual machine to run a real 64bit server either, but for a quick test server it'll work just fine if you have lots of memory lol.
Depends on the server pack, some dont have the commands implemented very well, or your command level for the commands is too high, set your access level as a gm to 200 or more and try again.
Alternatively configure the command access level in the server config properly.
goodluck.