does anyone know how to remove the pops and clicks resulting from scratches on vinyl records using Sonar X2 Producer?

There isn't anything dedicated really. I'm assuming you don't have access to Izotope RX2/3 or the Waves or Sonnox audio restoration suite?
 
Probably your best bet is kicking a multiband compressor like the Sonitus in and out of action at the right points. You'll have to juggle the bands to get the best effect (maximum pop reduction with as little negative effect on timbre as possible).

If you have X2 then R-Mix is likely the best candidate. However there are better tools on the market for this type of thing like Izotope RX... unfortunately it's pretty expensive BUT if you only need to do a couple albums they have a free trial you could use. I think it's 10 days unlocked.
 
Otherwise I don't think there is an easy fix all plug within Sonar. That was one nice thing about X2... the inclusion of R-Mix and it was the only version that had it (stripped out in X3 because of the Gibson takeover).

There is of course the manual method of zooming waaaay in and removing any needle pops by slicing them out or just turning them down with automation. The remove any overall hiss with the linear phase EQ plug. You could even go real crazy with audiosnap and dragging out anywhere you've sliced so there is an overlap and creating crossfades but that is a LOT of work.

Several years ago on a previous PC, I used the Nero suite, which included a noise reduction application which worked fairly well (but not as well as RX; the Nero application could more easily generate artifacts). However, the Nero suite was relatively inexpensive. I do not know whether the current version of Nero includes this capability.

A few years ago I started converting some old vinyl to .wavs. Luckily there were only a few that I really wanted to convert as it was bloody hard work. I tried 2 or 3 different programs and the best I found was the pro version of http://www.nch.com.au/wavepad/ As I said, it's hard work but I got pretty good results out of this.
 
Good luck! 

Sorry wrong thread. Not sure how I got here. Forum Dementia...

mcdonalk
Several years ago on a previous PC, I used the Nero suite, which included a noise reduction application which worked fairly well (but not as well as RX; the Nero application could more easily generate artifacts). However, the Nero suite was relatively inexpensive. I do not know whether the current version of Nero includes this capability.

Good point. I just upgraded to the latest Nero 2014 Platinum the other day and there are some extra tools you can downoad. One is Nero WaveEditor which looks like a basic audio editing program, similar to Audacity but I've just gone in and had another look and I'm now installing something called Nero SoundTrax which according to the info lets you 'digitize vinyl or tape recording'. I gotta head off to work right now but I can have a look later to see what's involved if you like.

Somehow I always seem to end up with a resonance on RMix's cutoff points, making it useless for most purposes.

The noise is actually one of my favorite parts of vinyl!!!  The tools for noise removal on both sound forge and Adobe audition do a decent job.  Perhaps try a trial of either of those and see which yields best response.  I have been leaning more towards audition lately for noise removal.  Izotope RX is amazing but out of my price range.