New XPS420 - what are these items in programs & features?

Hi. My new XPS420 came on Saturday.  There are a few items in the programs & features listing that I don't know what they are/what purpose they serve/do I need them?  Can anyone help?

Broser address error redirector

SupportSoft Assisted Service

I have already uninstalled Dell Support and the launchers that were in the start menu folder "Dell Software & Utilities".  Do I need to keep the Bantec Service Agreement on the computer?  Also same question about the User Guides?  (I have the book that came with the computer.)  Just found a folder on the HD called Dell that has a sub folder for Docs (it has a bunch of stuff in it along with edocs.exe which I just ran and it's the Dell document viewer).  Would this folder be deleted if I uninstall the user guides or is it something else?

Also I see an E-center folder and a Welcome Center folder under the Dell folder.  The E-center folder had something about the Google toolbar which I have uninstalled along with the Google desktop.  Can I delete these folders or is there something in the programs & features that removes them?

I just keep coming up with more questions.  There is also a doctemp folder.  What is this?  Another folder called $$DeleteMe.$$DeleteMe etc is listed with nothing in it (unless they are hidden files)??

Thanks in advance for any help,

Lisa