Anybody have any tips on planning a large lan party?
We have been debating on throwing a party for up to 50 or more people. I'm looking for any ideas that might help stop unforseen problems that could occur. I'm looking for answers to these questions and anything else that might help out.
How much electrical power?
How much internet bandwidth?
How to enforce antivirus policies?
How to organize games?
How to handle tech support?
And many more questions that keep running through my head
Any pointers would be great

I've hosted many small(dozen people) lan parties and sometimes it's more work than it's worth. Anybody who has been to a large party, please share any info that helped make it a good experience. Thanks