DDR and PS-X-Change2

[Bustacap2K2]

Hi,
I've been into this and that with modchips and such for PS2 lately, but I bought DDR 4th and 5th mix imports... and my friend told me I could use a thing called Ps-X-change2 to play them on a PSX. So, I bought the PSXchange, and nevertheless, i do what it says and I get a system has been modified thing on the screen. Now, i've read about this, and found that I have to put in some anti-mod codes or something, 5th mix's being DO1743E1014
801743E1000.. but my question is - how do i put those codes in? Do i have to make a copy of the game and patch it before i burn it with the codes? If so, how do I do that? what software do i need and where do i get it?