Thanks! At the end I had only 3 seconds to replace "I've gotta go... my grandmother needs to use a phone", so it's messed up a little.
Giorgio I made a tutorial:
Basically, you need Awave studio and hex and audio editor, I used WinHEX and Audacity. At Hexeditor you'll probably need only (0..20) lines,but I didn't tested it, Anyway, I'm not a programmer, so I dunno
SpinDashYeah, I used "I love.." from capsule toys phrase, and "you" from somewhere else. Similar with other lines, the main problem was to find a file with right intonation.