also,you do not want to use gingerjane. it is basically the leaked OTA,and unless youre using the "fixed shit" version,the camera is broken,among other things. developers have really cleaned up that leak alot... it would be pretty stupid,IMO to even mess with the origianl leak. not to mention that jcase had pulled all his links for it on XDA,so downloads of it elsewhere may not be with his permission.
there are many 2.3 roms that are 100x nicer. gingeritus 3d,bamf 3.0,ginger th3ory,liquid gingersense,just to name a couple. check out the thunderbolt rom list sticky for xda links.
if you can live without sense,cm7 is a wonderfully stable AOSP rom,and some of us now are using liquid thunderbread with great results. there is also OMFGB.
plenty of other ways to get GB on your phone than messing with the original buggy leak.