ok,so i setup the svn tortoise and have to admit its pretty slick. i was under the impression,that it was just placing the changes into a flashable .zip file,but looks like youre still flshing the entire rom every time. not a big deal,it is still saving download time.
for example,this morning i used it and it downloaded 73.38 mb worth of changes and additions.
for S&Gs i exported them to a different folder as you described above,thinking maybe that these would just be the changes,but nope- still 600ish mb resulting in a 427ish mb .zip.
one thing im slightly confused about- i checked the md5s of the.zips created from folders from the target eternity folder,and the exported "eterinty updates" folder. id have expected them to be the same,but got 2 different md5s?
i guess maybe something happend during the export. since its looks to be creating essentially the same thing,i think ill just keep creating my .zips from the target desktop folder.
at any rate thanks for the info,the svn is nice for the downloading just the updates.