You need Windows 7 (32/64) bit. you can refer list of OS supported by LR from install guide.
There is no trial edition for Windows XP and hence you have to get the OS that is recommended by HP
You need Windows 7 (32/64) bit. you can refer list of OS supported by LR from install guide.
There is no trial edition for Windows XP and hence you have to get the OS that is recommended by HP