uninstalling Softmod deluxe ?

i was wanting to know how to uninstall the softmod completly no trace of it left on my box cause i need to take it back to bestbuy the door doesnt work like it suppose to. But before you tell me here's how i installed the softmod.... Ok i used the mechassault load and got to the SID 2.0 screen the FIRST thing i did was "Create MS backup" then a mod backup after that i installed the softmod then iinstalled Evox then after i did that i installed the ms pacth <my xbox was already the right dash> thats how i did it and id like to install it back on my new xbox when i get it but i am kinda worried it wont work on new xboxs? if not is there a way to check the model on the box in store? BTW if i goto c:/backup and copy my msdash backup to my pc for emergencies <in case my brother hit create ms backup again> would i be able to ftp it back to my xbox from my pc later? and will this remove the sid menu when i leave the tray open also?