How the heck does someone open their ps2 w/o messing stuff up

[Isuxatmodinstallment]

I tried opening it, to install the _one_ wire that the neo key requires, and i stopped after unscrewing a bunch of stuff, and after getting nervous from throwing away my well earned 300 bucks. I wonder, are there any mod installment shops in miami?

Any tips, directions, advice, or whatever would be appreciated.