seperating one file into two

One way to do this is to create a new file that is 11x17 and on your original file select all layers and drag into the new file. Place it to where it is showing half of your design. Do this again with another new layer and place it to where only the other half shows.
As far as taping two transparencies together it really shouldn't be a problem if you have a descent exposure unit. I've taped a lot together and haven't had much trouble. Hopefully someone else can help you out in that department.

thanks alot, your reply helped alot. my exposure unit isnt too fancy, its just a 500 watt halogen light suspended 20 inches above a table so im worried i might have a little difficulty. would you reccomend leaving some space between each image and the edge of the paper or should i line it up to the very edge? thanks again for any help!

like mandobear mention if you have a good exposure unit no problem. when i first started i did this alot. i noticed when i overlapped the two films i would get some problems at times. if you have a lightbox overlap them, tape them from behind. and from the front. next cut it right down the middle in between the two taped areas. next untape them and but the two pieces together, and tape from behind. fill in any gaps with a sharpie or a piolet pen. if you tape in front were your image is, you create a gap between the screen and your film.you want the film right up against the screen. with a gap light can seep in. this would happen on some of my projects. i know it seems like alot of work, but sometimes that was the only way i could get around. i tried different ways this worked best for me. my suggestion is try it the easy way, if it works go for it, if you have problems try the way i mention, it should work fine

ok thanks, as i said i only use a 500 watt halogen light suspended above a table. im not sure i really follow what your saying, but have the tape on the side facing the exposure light and not facing the screen? and should i add some space in between the two images when i print the transparencies?

but have the tape on the side facing the exposure light and not facing the screen?

CORRECT

and should i add some space in between the two images when i print the transparencies?

LEAVE YOURSELF ENOUGH TO OVERLAP SO YOU CAN ALIGHN THEM. IF YOU DO HAVE TO CUT THEM DOWN THE MIDDLE AND BUTT UP YOUR EDGES, YOU MIGHT HAVE TO DO SOME TOUCH UP. TRY THE OVERLAP FIRST. IF YOU HAVE LIGHT COMMING THROUGHT AND EXPOSING PARTS THAT SHOULDNT, THEN DO THE METHOD I EXPLAINED ABOVE.