well duplicating PS2 games i just used “Alcohol 120%” (i aint sure if that’s needed, but it’s what i used) when i had my PS2 and used the Swap Magic v3.6+replacement case (which i ordered from http://www.clearxbox.com/site/pages/cat_ps2.html (this is the PS2 case, make sure you get the right one for your system etc) a while ago)
but i also had to get some boot CD’s (i.e. Swap Magic v3.6) and a replacement case for my ‘slim ps2’ when i had it (i dont have it anymore though as i sold it etc)… here is the official Swap Magic website… http://www.swapmagic3.com/default.htm
but basically i used ‘Swap Magic v3.6’ (you have to buy these discs online) and a replacement case for the PS2’s as you need a ‘flip top’ case instead of the standard one… only bad thing with those is you have to use those ‘Swap Magic’ discs to load the backup’s every time u play a game. so for example… once u got it all up and running you basically power up the PS2 with the Swap Magic disc in it, it will then load to a menu and the disc will stop spinning, then you open the PS2’s drive tray, then put in your burned game (which is on DVD+R etc) and then press ‘X’ on the controller and it loads and then you can run your game … but this might not be a good option for you since u said u got kids and they could ruin those Swap Magic discs and if those get ruined you have to buy new ones since you cant make copy’s of those discs with a standard PC burner from what i was told.
also with the Swap Magic… im fairly sure it will only work on ‘single layer’ games so if you got a dual-layer (i.e. 8.5GB) game it wont work… but the vast majority of games are single layer (i.e. 4.7GB) for the PS2.
but in general im not a expert on PS2 moding as i’m sure the modchip route is probably still best, but that Swap Magic method is easier for the average joe to do but it has it’s drawbacks… but typically speaking im more knowledgeable with XBox/XBox360 consoles as far as moding etc… so if you need more help moding the XBox i can help you… and if you got a PC with a cd/dvd burner then moding the XBox wont cost you a dime