VLC: registry and media options

Hi all,

This is my first time using this Portable VLC and I would like to ask a few questions regarding its usage:

1) Does it leave any registry entries behind when I run this program on my comp or any other comp?

2) If I burn Portable VLC into a CD-R, will I encounter any problem when trying to run it straight from the CD? Will it attempt to write/modify a file in the Portable VLC directory?

thanks all,
gildan2020