I can't program but want to help you a bit.
To program a plug-in you can better use C++. That's the language where Winamp is written in.
What do you want to do with Super PIMP? (You know that it is a Installer?) There is
an .exe file but you'll need that one to compile your .nsi scripts. To understand that, you'd better read the ducuments and examples that come with it.
About your second project, that will depend of your capability. And how you want to make it will depend on yourself. Afterall your
But since your a newbie I personally think that you're not (yet) capable to create these programs. Programming is difficult.
But I wish you good luck.