You can do it one of five ways... check out
http://www.e3expo.com I can't remember how much it is to get in ($150-200 for a normal pass) cause I always do the free industry member pass, but it is not a whole lot of money. The conference is for industry only, but if you pay they usually do not ask any questions, so you can get in if you front the money. If you want to get a free pass and you work at an entertainment, tools, or gaming company; fill out the form on the net, and fax it over to them with a copy of your badge/business card. They will send you a free pass in the mail a few weeks before the show. I have been going since 1998 and I love the show, if anyone here does plan to go let me know. I probably will not go all three days (We will be in crunch mode at work, I have a project due out the door on the 21st of May) but like I said, I never miss a show, so I will be there atleast one day!
-Nick