Honestly, your BEST bet is to contact the vendor of the pointer, and see if they have any lenses that will fit your laser....that is the only sure way I have found The ones that NOVA sells (about $3.00 each) are a little too big to fit in that brass ring thingie - so will not work well
http://www.edmundoptics.com/
One thought next time you post a photo from your digital camera make sure the damn thing's in focus, it digital after all your not wasting film.