Newbie with Mod question.

[SigX5]

Hello everyone. First of all, I'm a newbie to this forum looking for some advice. I've scoped this forum out for a week now and it seems to be informative.

I just bought a 2006 Jet Black X5 3.0, tan leather, premium package, cold package, rear climate package, xenons.

I was thinking about painting my front grill and air vents the titanium color like I saw in one of the other posts. Has anyone done this yet and how did it turn out.

Also, what is involved in the preparation before paint. Would I have to sand down, polish, etc. my existing black grill and vent?

Thanks guys and I look forward to hearing any advice/feedback.