From within WHM, navigate to Nameserver Selection and verify that BIND is working. If it is, you're already good to go.
You may also be interested in another RBL called Barracuda. It's free but requires registration of your IP address. It too is very accurate and in my testing caught 61% of spam with no false positives. The other RBL I use is Spamhaus's Zen.
I use the following scores:
score URIBL_BLACK 10
score RCVD_IN_SBL 10
score RCVD_IN_XBL 10
score RCVD_IN_PBL 10
score URIBL_DBL_SPAM 10
score RCVD_IN_BRBL_LASTEXT 10
score RCVD_IN_BL_SPAMCOP_NET 0 1.246 0 1.347
These high scores of 10 tag any mail on these RBLs as spam, but still deliver it to the users so they can inspect what is being tagged if necessary. (Assuming your "SpamAssassin™ reject spam score threshold" is high.)
In my testing, 98.5% of spam is on one of these blocklists. 1.3% is caught by Bayesian or other rules. I'm still trying to figure out how to catch the remaining 0.2%.