1993 Nissan Pathfinder clutch not working

Engine Mechanical problem
1993 Nissan Pathfinder 6 cyl Four Wheel Drive Manual

hi i own a 1993 nissan pathfinder SUV, the frame rusted out on the thing but i still like to run and drive it once and a while. so this time and go and try it drive it the cluth doesnt work. when i push it in it goes to the floor it just stays down, then i have to pull it up with my hand or foot. even when the clutch is down i CAN NOT go into any gears. does anyone no what is wrong??

note: the nissan has been sitting for a while since the last time i drove it (6 mounth or more) also my kids were playing in it at one time (pushing the pedals)

i was reading on the internet a bit and i found this fourm: http://www.mgaguru.com/mgtech/clutch/ct_104.htm
is this what i need to do?