PS2 Troubles

[Wes Ide]

Okay I have been reading up that megagames has all these patches for PS2 games. How do they work, as in, do I create an imagefile of a PS2 game and then apply the patch and then burn it to a CD?
I have experience in making backups of PSX games, but evidently, making backups of PS2 games is significantly more detailed and I am so far confused.
I also have some kind of file ("usps2patch.exe") i got from www.dc-underground.com which, when I open it, shows me the name Paradox and gives me the options to clikc buttons for browse (for a cd image file), patch, create ppf, about, and exit. my question is what do i use this with?
now then, the text file included with this zip from www.dc-underground.com says:
"There are 2-3 ways to play a backup game on the PS2 by using the trick. The B.A.D. dudes found an easy way that allow you to swap the original cd only 1 time. Boot with the original PS2 Utility Disk, swap with backup cd and play the game. But you need to use this patcher first to do this easy swap trick. So, create an imagefile of your game in something like cdrwin and run the patcher. Alternatively you can use the 'create ppf' to make a patch file for distritbution so that others may easily for their images by just using applyppf and the generated patch."
In additition to all of this, everything I've read mentions a ps2 utility disk, but my american ps2 had no disc.
for example,

i am confused as hell right now and megames, while a good resource for info, does not have a detailed FAQ and no other site i have visited has been able to answer my questions so I know what I am doing. Will somsone please help me? I don't want to end up with 187 coasters.
Now, for the info:
I got an American PS2, no mod chip
AIM name: WSP4Life2000
Email: [email protected]

Thank you.