I'll second what LBR said, the shafts for a 65# recurve will bay WAY too stiff for a 45# recurve. Generally speaking, a 65# recurve would take shafts from 65# to 75#, possibly stiffer; a 45# recurve would take shafts from around 45# to 55#. A drastic difference, no? The weight of tips you use will make a difference in what spine weight shafts will work. I'd recommend starting will some basic shafts in a few different spine weights to find out which shoots best. Find out for sure what your draw length is, it's a critcal thing to know because if it's longer or shorter than 28" you're not holding 45#. Call an arrowsmith to get hooked up with some basic arrows. If you fletch them yourself you can get some shafts pretty cheap. If you have them fletched they're still pretty cheap if you go to the right place. Having the right arrows is definitely important, else shooting wouldn't be any fun. Have fun with your new bow though.

God bless,
Brandan