A BE58 ON LNDG HAD THE NOSE GEAR COLLAPSE INCURRING DAMAGE TO THE ENGS; PROPS AND UNDERSIDE OF NOSE SKIN.

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ON FEB/WED/05; I PICKED UP A BEECH BARON FOR A FLT TO ZZZ. DURING THE PREFLT; I NOTICED NOTHING OUT OF THE ORDINARY; HOWEVER; PAID A LITTLE EXTRA ATTN TO THE NOSE GEAR SINCE IT HAD JUST COME OUT OF MAINT TO REPAIR THE NOSE STRUT. STILL; NOTHING OUT OF THE ORDINARY. DURING THE TKOF ROLL; ALL WAS NORMAL. APPROX 1/2 WAY THROUGH THE TRIP; I NOTICED THE LNDG GEAR RELAY CIRCUIT BREAKER WAS POPPED. PER THE CHKLIST; I TRIED TO RESET IT WITH NO SUCCESS. AT THIS POINT; I WAS ASSURED OF A MANUAL GEAR EXTENSION AND CHOSE TO CONTINUE UNTIL CLOSER TO THE DEST. ABOUT 25 MI FROM ZZZ; I BEGAN RUNNING CHKLIST FOR MANUALLY EXTENDING THE GEAR. I HAD NO INDICATOR LIGHTS SINCE THE RELAY WAS POPPED; SO I SLOWED AND PUT IN FULL FLAPS TO GET THE GEAR WARNING HORN BASED ON FLAP POS. I BEGAN CRANKING GEAR; APPROX 55 TIMES; UNTIL HORN QUIT. AT THIS POINT I RADIOED THE UNICOM AT ZZZ TO GET SOMEONE TO COME OUT AND SEE IF I HAD '3 DOWN AND LOCKED' AS I FLEW BY. THIS TIME THEY SAID IT LOOKED GOOD; SO I PROCEEDED TO LAND; AT WHICH TIME I FELT THE NOSE GEAR GIVE WAY. I WENT AROUND AND ASKED THEM TO CHK ONCE MORE AND THIS TIME THEY NOTICED THE BRACING BEHIND THE NOSE GEAR WAS BROKEN. THEY RADIOED THE FIRE DEPT; AS IT WAS OBVIOUS I HAD NO CHOICE NOW BUT TO LAND. ONCE THE FIRE DEPT ARRIVED; I PROCEEDED TO LAND; AND ABOUT 200 FT OFF THE GND I SHUT DOWN BOTH ENGS AND TURNED OFF THE MAIN FUEL SELECTORS AND FEATHERED THE PROPS. UPON LNDG; THE NOSE DROPPED TO THE GND AND THE AIRPLANE SLID APPROX 300 FT. THERE WAS ONLY MINOR DAMAGE TO THE UNDERSIDE OF NOSE AND PROPS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR WAS ADVISED BY THE MAINT FACILITY THAT IT APPEARS THE NOSE GEAR INCURRED PREVIOUS DAMAGE FROM TOWING. NO FURTHER DETAILS WERE AVAILABLE ON WHAT NOSE GEAR COMPONENTS WERE DAMAGED.