Help with WinISD Pro Alpha 0.50a7

I am trying to model a pair of Alpine SRW-1022D subwoofers in WinISD Alpha Pro 0.50a7. The program apears to be corruped; I can't close it without using Contol/alt/delete. I would like to un and reinstall it, but can't find the saved projects in Windows Vista and I would like to save them before I lose everything with an re-install.

I am barely computer literate although I am an Architectural Drafter and can waltz around AutoCAD Architecture along with the best and can draw anything in 3D including drawing the world's fastest street car, but...:)

Anyway, the sub specks are here;
http://www.alpine.com.au/files/curre.../SWR-1542D.pdf

And WinISD claims a ported box of 1.783 cu. ft. tuned to 22.8 Hz with a 6"x1.5"x23.98" port will reach f3 of about 20Hz.

Am I on the right track? I want to build a pile of distributed bass subs (4?) to augment my Altec 8 cu. ft. 418 8h II guitar speakers and 808 8a/ 32B horns which are good for something like 100db/1watt/1meter and which sound great down to about 50 Hz. F3=44 hz.

The Alpines are a couple that my son wants to sell and I think that they look good on paper.

I am thinking that I want to power them with a Crown XLS Drivecore amp of I don't know what wattage and need at least 100 db at 14 feet listening distance.

Any help would be appreciated.

James