It's not a message; it's a song, with a name that translates to "The Sissy Boys' Poem". (This probably just means a guy who cries too much and pines over lost (no?) loves.)
<<女々しい野郎どもの詩>>
窓に映る景色は偽りに溢れて
僕の胸を冷たい暗闇が閉ざすよ
Ah君がいるならば
抱きしめたいのに
Ah時を戻せるならば
帰りたい今すぐ
製作・著作 コナミ株式会社
"The Sissy Boys' Poem"
The scene reflected in a window is full of falsehood.
Cold darkness shuts my breast.
Ah, if only you were here, I would want to give you a tight hug.
Ah, if only I could go back to that time, I'd leave right away.
Manufacture and writing KONAMI CO., LTD.
Regarding noobish questions, yes, rip the game CD using TurboRip, and patch the track02.iso file using an IPS patching program. Be sure to test it out in an emulator before burning it onto a CDR!
If the patch doesn't work, then here's what gets changed (so you can try to hex edit it): Locations 24795A, 24795D, and 247960 in the ISO get patched from $9C (stz) to $8C (sty). If these 3 bytes don't match what you have in your ISO, you can always search for the byte string 9C 08 3C, and 9C 09 3C right after that. The time patch is at 1100B21, where the string (A9) 03 8D D9 3C gets changed to (A9) 0A....
There, that should be enough for everyone.