Hi i got it working!! Sorry i had this working already 2 days ago but was busy to post a reply. Yup like i thought, since Windows 7 Ultimate has the option to change to any system language you want on the fly (you have to download it first from Windows Update of course), i just changed it and restarted and bam the whole system is in Chinese. And that's it! SonicStage will let me import chinese songs to it.
Also, what i did before importing my songs is that i first used Sony Sound Forge 9.0 and used the batch converting option to convert all my files to ATRAC3 format. I used the 64 kbps btw. Then, i just import them in SonicStage and it doesn't need to convert them since i already converted them using Sony Sound Forge, and all it does is burn the files to the disc which was really fast for me, and i'm using a crappy laptop with 2GB ram btw.
Anyway, the sound quality plays really well, except that songs don't show chinese characters when played on my Sony CD player, it just shows ---- instead.
Oh well, at least i organized them into folders so it's good enough, i just wanted to try this out since i bought this Sony CD player from lyk.....5 years ago? Which came with the very first SonicStage burner v1.0 lol. Ya this is great, i can just use that CD player for my car....
thanks to everyone for all the help!