Can you can do to your phone is, do a restore to your phone which means all data saved in phone deleted and immediately download another launcher from the market once after restore is make.
Don't need to do a factory reset for this. Just go to market.android.com, login, find the launcher that you want (zeam, adb, launcher pro, ex launcher), then install it from there.
When your phone finish downloading and installing the launcher, there should be a popup that asks you to select which home do you want to use (dell stage or downloaded one). click on the "set to default" first, and then click whatever you downloaded before. (if there's no popup asking for it, then press the home button).
Btw, those who wants to root, can use Gingerbreak (google it). I root mine easily, less than 5 mins. After that i bought BloatFreeze to freeze all those garbage dell app.
