This may help with the leash training.
http://cats.about.com/library/howto/htwalkleash.htm
And this
http://blog.worldvillage.com/home/le..._your_cat.html
As for the carrier,you need to start off slowly..Continue to keep it open.Put a towel/blanket it there.You can even put some treats in there.Even better,some toys.Sit there with her and toss the toys/treats in there...This is really not different then starting crate training for pups.This is how I did it for my cats. When she gets used to it a bit and she's inside,then close the door for a bit,talk to here though.
Then when it's closed,carry it around for a bit...Get her used to the moving around.My cats will still meow when they are in it...