AN ACR MDT BADLY FOULED UP A PROFILE DSCNT AND MISSED 2 ALT XINGS AND AN AIRSPD RESTRICTION.

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BOTH THE FO AND I HAD BRIEFED THE PROFILE DSCNT. BOTH OF US HAD THE CHART DISPLAYED ON EACH SIDE OF COCKPIT. OUT OF FL240 I RESTATED THE PROFILE OVER WATERLOO VOR AND ASKED THE FO IF HE HAD IT (UNDERSTOOD CLRNC). HE SAID YES; 17000-13000 FT OVER YWT. I LEFT THE ATC FREQ TO CALL YYZ OPS INBOUND AND TO MAKE THE ARR ANNOUNCEMENT TO THE PAX. WHEN I RETURNED TO FREQ I NOTICED THAT WE HAD PASSED YWT AND WERE DSNDING OUT OF FL190. I TOLD THE FO THAT WE WERE TO BE AT 11000 FT IN 5 MI; THE RICKI INTXN; AT 250 KTS. OUR SPD WAS IN EXCESS OF THAT; BUT I DON'T RECALL WHAT IT WAS. SO THERE WE WERE; OVER RICKI AT 14000 FT AND SPD 280 PLUS KTS. BOTH THE FO AND I HAD ABOUT 50 HRS OF LINE FLYING THIS NEW ACFT. BOTH OF US CAME OUT OF TURBOPROP EQUIP. THE FO IS NEW TO THIS AREA WHILE I HAD FLOWN IN THE YYZ AREA FOR YRS; INCLUDING THE PROFILE DSCNTS. FURTHER; THERE IS NO GND SPD READOUT IN THE ACFT; NOR ANY FMS OR RNAV. WHILE TIME-TO-GO AND DISTANCE TO STATION ARE DISPLAYED; THE FO WAS USING SOME FORMULA TO PLAN HIS DSCNT IN WHICH APPARENTLY HE USED A SLOW ESTIMATED GND SPD. FOR MYSELF; I USE 8 OR 9 MI/MINS GENERALLY UNLESS I KNOW WE HAVE A GOOD TAILWIND; THEN 10 MI/MIN. CORRECTIVE ACTIONS: CONFIRM WITH FO HIS PLANNED RATE AND SPD FOR DSCNT. MAKE ARR COMS EARLIER SO TO ASSIST FO IN DSCNT. HOPE COMPANY AND MANUFACTURER INSTALL 'GS' READOUT AT LEAST. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING: THE PNF CAPT STATES THAT BOTH CREW PERSONS ARE NEW TO THE ACFT AND JET FLYING; ABOUT 50 HRS EACH IN THE ACFT. THE ACFT IS NEW TO THE ACR AND EVERYONE IS FEELING THEIR WAY ALONG. SOME OF THE NAV SYS ARE NOT YET FULLY OPERATIONAL. THE RPTR IS FINDING THAT THESE 'LABOR SAVING DEVICES' CAN CAUSE A HIGH WORKLOAD; ESPECIALLY WHEN THEY ARE NOT FULLY UP. THE ACFT FLIES VERY WELL. THE RPTR HAS NOT HEARD ANYTHING FROM THE FAA AND IS RETHINKING SOME PERSONAL PROCS TO HELP COME INTO THE JET AGE. THE RPTR'S PREVIOUS EXPERIENCE WAS IN AN ADVANCED COCKPIT TURBOPROP. SUPPLEMENTAL INFORMATION FROM ACN 245076: DURING PROFILE DSCNT RWY 24 YYZ; ACFT MISSED XING RESTRICTION BY 2000 FT. BOTH CREW MEMBERS HAVE LESS THAN 50 HRS IN ACFT IN LINE SVC. ACFT HAS NO GND SPD READOUT BECAUSE THE FMS IS NOT INSTALLED YET. BETTER COM WAS NEEDED BTWN CREW MEMBERS AS TO LOCATION OF XING FIX AND PLANNED DSCNT TO REACH THAT FIX.