My sister is running an decently aged computer that used to run Windows XP. After being fed up with wiping XP out, partitioning it, and optimizing it; only to have it distroyed by her and my fathers usage of it. So I have installed Linux on it, however I totally forgot about user-ability somewhat. So seeing as I haven't used any "noob" friendly Linux in a while. I'm wondering which Linux would run on a 1.7ghz Pentium 4 processor, 256mb ram, and 80gb hard drive. I know the usual are DSL, Vector-Linux, and Puppy Linux. But none of these seems to have Java or Flash in the Repos. Which would be extremely helpful to me seeing as I am lazy and do not want to go through the step to add them. Any suggestion should not have fluxbox, openbox, and WMs similar to those because they are used to Window XP GUI. Lastly full screen support for online videos would be extremely helpful. Thank for any and all post that may follow.

You could try PCLinuxOS

You can also try OpenSuse

Finally there is lxde which has its own live cd, check that out as well

Mandrivia, Slax, or Mint. Ubuntu seems to be the most popular though.

kubuntu is a good choice but may not run well on the hardware.

Or Xubuntu. An Ubuntu distru that uses Xfce instead of Gnome or KDE.

antix it works on p11 with only 64mb of memory. it uses icewm and fluxbox and has all the repos for flash and that ready to go.

Mint 7 is pretty good... nice GUI to...