Hang in there Suzanne.
Everything Roklok says is correct....but I must admit, a little confusing for someone who is just starting out in "the game".
Don't get too wrapped around the axles with scope/sight height above the bore. The only reason Point Blank wants your sight height above the bore is to allow it to do the calculations for the trajectory of the load.
Decide what range you want your rounds to be hitting point of aim at...enter the data, and you can then get the Point Blank Range from the Point Blank Program. You can also look at the trajectory data for your load and see what the point of impact is at different ranges for that load.
Example:
Using hypothetical figures (should be reasonably close to your load though)...lets assume that you want your boolits to hit point of aim at 200 yards. Now, if you do your zeroing shoot at 100 yards, according to the trajectory table in Point Blank Online, then your rounds should print 2.63 inches high at 100 yards.
Yards.....Height
50..........1.49
100........2.63
125........2.62
150........2.20
175........1.33
200........0.00
225.......-1.86
250.......-4.17
275.......-7.13
300.......-10.78
With a 10 inch kill zone, and your rifle zeroed to hit POA at 200 yards, your Point Blank Range is a fraction under 300 yards...that is, you could expect to hit within the kill zone between 50 yards and just under 300 yards without having to "aim off"...so long as you do your bit.
As I said...these figures are not exact because I don't have all the data , but they should be reasonably close.
If you haven't already, download the Point Blank Ballistics software from this site and start entering your data. You will never look back.
As the guys say....put a target out at 100 yards and put some holes in it...with your boolits of course...things will become clearer then.
Cheers, Vince