help with speedometer, tranny, engine light

i replaced the automatic tranny on my 1997 eclipse rs, about 1000 miles ago. last night the car was placed in park, after a 20 mile drive, with the motor running, for about 2 minutes. i placed the car into drive and it will not go out of first gear now. also the speedometer quit working and the check engine light came on. this all happened at the same time. reverse works.
any help out there? please??????????