I'm from Pa. with some knowledge of the rules regarding Divorce.
It appears that you are still in the negotiating stages of your divorce (child support/child custody/equitable distribution/etc).
How unfortunate that you were left midway attorney-less. However, you can finish the job on your own, with proper knowledge. Of course, depending on the complexity of your situation, you may just want to call the Bar Association in your county and request a Family Law attorney referral, especially if you filed anything other than a 3301(d) divorce petition (no fault). 3301 (a) (b) and (c) divorces are messy and complicated. If you choose to try this on your own, there is a website to give you knowledge of Pennsylvania Rules of Civil Procedure.
http://members.aol.com/RulesPA/Civil.html
There are multiple steps you must go through within the court system. If you are going to represent yourself, then the first thing you need to do is file a Motion of Entry of Appearance (removing your attorney from the case) and another Motion of Entry of Appearance (entering yourself as Pro Se on your case). After you file these documents with the court, you can then file a Request for a Masters Hearing. The prothonotary at your county courthouse will be able to lead you to their law library, where you will find forms you need to use (and photocopy use).
Good luck to you.