Steve,

1)You didn't mention your xtal rate.
2)1 second is longer than Timer 1 can generate un-assisted. You will have to keep a loop variable. Depending on your xtal freq. setup Timer one to give you a nice sub-multiple of 1 sec (i.e. 10 ms) and then every time the timer erupts, bump the variable by one until it reaches 100 and then compliment the port pin.
3)Get used to jumping over the Interrupt Vectors.

regards,
p