yes. it is called a "localhost" in that situation. being installed on an internet server is in no way necessary for the game to run.

many coders have locally installed versions for testing purposes.

*blinks a couple of times* Wow, I asked a question with obviously n00bish connotations and didn't get flamed!  I like this place ^^  Thanks, guys.

welcome to the community. if ye hath not already, take a look at the forum threads for realm creation and altered states.

in the menu, review the logd faqs for additional assistance.

for help with php and mysql, and programming tools, i strongly suggest the extensive list of links also found in the menu listing.

the search function works pretty decently, too, for seeking on key words.

when ye find thyself puzzled about something, if ye ask ye will generally find someone here who will be willing to point ye in the right direction.

we don't bite... too hard.  

Most coders do or should have a test server.
No sense in releasing a mod that doesnt work is there?

The program recommended above is great - one suggestion though - the moment it is fully installed - CHECK the language, by default it is French - if you dont read french, it behooves you to change it a language of your choice.