That was my screenshot you saw. I have a three button mouse. It's called a
Logitech Wingman Gaming Mouse. It's actually a reissue of an old Mouseman that people liked so much for gaming that they demanded a gaming model. I first found out about it a couple years ago and got one for myself because I have huge hands, and it fits nicer than the other mice I had. Also, the price tag was delicious at around $25.00. It's been a great mouse, I have the same one for at least 2 or 3 years, and I game every day and I used to LAN several times a month.
I use middle mouse button for zoom now, and Space for "use." It works for me
