effect of rearend gearing on ET's

As far as the projected numbers of the desktop dynoe go, they definatly need some work....im going to do my homework reading the mopar chassis manual (no other homework to do since my school is on strike so mine aswell do ma mopar homework) and then i'll worry about playing around with the desktop dyno later on...I guess my main concern is my selection of gears and the results it was giving me..like i said, as i changed from a higher numerical ratio i.e. 4.10 to lower ones like 3.73, 3.55 i noticed my et was faster...does this have to do with the desktop dyno screwing up or not having correct input numbers, or is this actually true? this was the answer i was originally after and the science behind the answer is what im interested in...Moper, i agree with everything you say, and from what i new, i figured the more gear the better for racing....anyone else want to offer their insight on this topic please do

thanks guys
Matthew