As for getting the rom.zip from an ruu I've done it both on windows and linux, personally i think its a tad easier on windows. Anyway, I got it by loading up the ruu while at the same time having a folder opened up to c:\users\%usrename%\appdata\temp\
As you open up the ruu and run it, you will see a new temp folder get created in that directory, open the temp folder up and the rom.zip should/will be inside.
making unrooted nandroids? the only way you can make a nandroid is if you
are rooted
unless there's been something i've never heard of before haha
