This is weird, after I tried at my friend's laptop it logged in fine and botted without problems but when I try it on my computer the l2.exe just freeze and doesn't show characters. I already tried changing maps and unequiping all characters on that account but without any result.
The friend's laptop even have Vista installed and in my situation I'm trying on Win XP. The only difference is that I run Win XP x64 (64 bit) while my friend runs Vista x86 (32 bit).
@metaltooth - The problem is that you have to set Administrator privileges and set to run in Win XP compatibility mode. To do that you have to right click on the l2asrv and select properties, go to compatibility tab or anything similar and just check and set the things I said.