bluehangook629 0 Posting Whiz in Training

Over the weekend, I found an old FireBox II in basement.
I pulled it from one of my clients about 6-7 years ago so I know it is in working condition. but the problem is that I dont have the monitoring software for it.
I went on Watchguard and the program is only available to subscribers which can cause hundreds of dollars.
My question is does anyone have a watchguard management software? if I were to upgrade my firebox, then what would be better choice between m0n0wall and DD-WRT?
Does firebox II support wifi? gigabit lan card?
Thank you for your input.