Need to make customized beats.

Try using the step sequencer. You have to learn to create the beats by yourself but using the step sequencer will help you along the way.

Try this link to Tweakheadz site.  There is a lot of useful info there on home recording.  This article is specific to programing drums.
 
http://tweakheadz.com/how-to-make-original-drum-tracks/

It may help if we know the style of drum track you are trying to make.  The way you would go about creating drum tracks for  Metal solo,a southern rap style trap beat and a UK style Drum and Bass are very different.

Dubdisciple: I would like to make a metal beat. Something easy to start off with.

The best suggestion is to listen to songs that are in the style you want to create and identify what is going on with the drums.
 
Figure out what is going on with the kick and then program it into the step sequencer or PRV.  Figure out what is going on with the snare, program it into the step sequencer.  Same for hi-hat, toms, cymbals, etc.
 
Often times if I am try to emulate a certain style, I have iTunes running and I listen very carefully to a song (often over and over again, rewinding specific parts) to ascertain the drum pattern.  I do the same for bass if I find a rhythm pattern I like.
 
its a lot of work.  Unless you just want to use canned loops from the internet or one of the drum sequencer add-on packs, you're going to have to spend the time and effort to understand how drums are played to get a realistic sounding drum track.

dwardzala
 
 
Figure out what is going on with the kick and then program it into the step sequencer or PRV.  Figure out what is going on with the snare, program it into the step sequencer.  Same for hi-hat, toms, cymbals, etc.
 

I'm still trying to find out if the OP can use SONAR at all and the drum (and other) VSTs. He hasn't given us any clue of where he's at, what he has tried, and what is it that keeps him from creating his own drum beats. Does he not know how to accomplish it in SONAR, or does he not know anything about composing drum parts or what?

If he's starting totally green, there's plenty of You Tube videos teaching basic rhythm and note values, and other theory.
 
As far as a "easy metal beat", that's pretty open ended as well.  There's blast beats for the thrash metal stuff, then there's all the 16th note double bass stuff.
 
Personally if he's totally new to stuff, I'd recommend he use something like Sony Acid.  It's not anywhere near as powerful as Sonar, but it's great for beginners, and people who don't know anything about music theory.  After you get used to that, it's  easier to step into something like Sonar.
 
Another up and comer that's more of a real basic, beginner DAW is Stagelight from Open Labs.  I think it's like 10 bucks, and you don't really have to have a lot of knowledge to create something basic.
 
Not to take away anything from Sonar, but I think most professional DAWs like sonar are hard to approach if you don't know anything about music, or music technology.  Where stuff like Acid has on screen walk through tutorials.