ACR RECEIVES TCASII RA WITH NO ADVANCE TA. DSNDS BUT HAS INDICATION OF TFC BEING BELOW. STOPS DSCNT.

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OFF RWY 13 TURNED TO HDG 175 UNTIL THE 2.5 DME THEN TURNED TO HDG 040. CLBED TO 5000. WE WERE THEN ADVISED TO TURN TO HDG 310; AND CLB TO 8000. OUR NEXT INSTRUCTIONS WERE TO CLB TO 15000 AND EXPEDITE THROUGH 10000. FO WAS HAND FLYING THE ACFT. HE INITIATED THE CLB; WHICH STABILIZED AT APPROX 4000 FPM. AS WE CLBED THROUGH 10000 WE RECEIVED AN RA. THE VSI WAS DISPLAYING A RED ARC THROUGHOUT THE ENTIRE VERT RANGE; WITH THE EXCEPTION OF A GREEN 'FLY TO' REGION AT APPROX 2500 FPM DOWN. A SOLID RED SQUARE WAS DEPICTED AT 11 O'CLOCK INSIDE THE 2 MI CIRCLE. THERE WERE SHOWERS IN THE AREA SO WE HAD THE RADAR SELECTED TO THE WXR/TCASII MODE. I GLANCED AT THE RADAR SCREEN TO TRY AND GET AN OVERVIEW OF THE SITUATION; HOWEVER THE AMOUNT OF CLUTTER IN THIS MODE PREVENTED A QUICK ASSESSMENT. FO HAD TERMINATED THE CLB AND WAS ATTEMPTING TO PLACE THE VSI NEEDLE WITHIN THE GREEN ARC. THE TCASII AUDIO WAS STATING 'INCREASE DSCNT; INCREASE DSCNT'. I LEANED FORWARD IN ORDER TO READ THE ALT DISPLAYED NEXT TO THE TFC SYMBOL ON THE VSI. MY FIRST OBSERVATION WAS THAT OF AN ARROW POINTED DOWNWARD; AND - 07. THE ARROW DISAPPEARED ALMOST IMMEDIATELY AND I TOLD THE FO THE TFC APPEARED TO BE BELOW US; AND THAT HE SHOULD STOP THE DSCNT. AT THIS TIME; THE RATE OF DSCNT WAS ALMOST 2500 FPM. AS HE SLOWED THE DSCNT; THE ALT DISPLAYED NEXT TO THE TFC SYMBOL WENT TO -05; -04; -03; ETC; UNTIL; AS WE LEVELED OFF; IT READ '0'. AT THIS TIME; THE TFC SYMBOL WAS OFF OUR L WING AT APPROX 1.5 MI. THE TFC SYMBOL THEN CHANGED TO YELLOW; AND THE AUDIO STATED 'CLR OF CONFLICT'. I CALLED ATC AND ADVISED THEM THAT WE HAD RECEIVED A TCASII ALERT AND HAD DSNDED IN ORDER TO COMPLY. WE THEN RESUMED OUR CLB TO 15000. CONCERNS: FO AND I HAD DISCUSSED TCASII ON THIS TRIP PRIOR TO THE INCIDENT. WE BOTH AGREED THAT DUE TO LACK OF TRAINING AND 'HANDS ON' EXPERIENCE WITH THE VARIOUS SCENARIOS; WE FELT AT A LOSS TO INTERPRET THE INFO AND ACT IN A TIMELY MANNER. IN ADDITION; DUE TO THE EXCESSIVE NUMBER OF NUISANCE ADVISORIES DURING THE TKOF AND LNDG PHASES; FLCS HAVE DEVELOPED A 'CRY WOLF' ATTITUDE TOWARDS TCASII; THUS RENDERING THE SYS INEFFECTIVE; AND DANGEROUS. CONCLUSION: AS A RESULT OF OUR EXPERIENCE WITH TCASII ON FLT; AND INFO I HAVE RECEIVED SUBSEQUENTLY; I FEEL STRONGLY THAT THE SYS IS NOT FULLY DEVELOPED AND IS PLACING PLTS AND PAX IN THE ROLE OF GUINEA PIGS. THEREFORE; I FEEL THAT THE SYS SHOULD BE TURNED OFF UNTIL SUCH TIME AS IT IS FULLY DEVELOPED.