I installed Xubuntu 11.10 on an old Windows XP in a separate partition. Later, I realized that I should have installed Lubuntu 11.10. Is there an easy way I can delete Xubuntu and replace it with a clean install of Lubuntu without deleting the partition? If not, what's the best way to delete Xubuntu and start over? By the way, this is my very first Linux install so I'm a definite newbie and would really like advice that does not involve using command lines. Thanks.
I don't know how to answer the first question but the second I can handle:
Best way to delete and start over is to format a usb key so it's FAT32 and then use a program like unetbootin to create a bootable disk.
Then all you need to do is set your bios so your computer boots from USB. You can do this at start-up by pressing one of the F keys (f2 or f4 or f8 something, I can't remember and it's different on each computer anyway - I just press them all and it usually works out ;-)) then you go into the page of the bios and change the order so USB is it's the first on the boot priority list.
Once you did this you need to save and exit it (be careful in the Bios too if you are not sure about anything I have said it is best to ask before fiddling about in there). Then reboot your computer and the lubuntu installer should prompt you for what to do next.
After that your computer will be all better.
Well I know you want advice that does not involve command lines but you only have to copy and paste one line into the terminal. (although you'll need a root terminal)
Open a terminal (Ctrl+Alt+T usually works)
enter your password
copy and paste (paste in a terminal is CTRL+SHIFT+V) in:
the "apt-get install" bit installs the ldxe desktop environment and all the programs that go with it, the "apt-get remove" bit removes all of xubuntu. You could also run