I flashed Uncommon Sense as my first ROM. The ZIP file is still on my SD card. I d/loaded it and mover it to the SD card and then used Rom Manager to install. A couple of days later I decided to flash Virtuous and the REVOlution theme. I also put the REVOlution transparent apps on (the ZIP file is still on my SD card). I also have an UPDATE.ZIP file. My first question is can I delete those without screwing something up? My second question is when you do a Nandroid backup, do you keep all of them on your SD card? For example, I have my stock recovery, an Uncommon Sense and Virtuous. I assume I could do a Clockwork recovery back to any of those. I have an 8 GB sd card and only have 2.9 GB left.