on your first post you said install like a rom so I just have to follow the instruction below yeah.... i can flash windows rom but im new to android. flashing/rooting an android phone is more complex ^.^
• Unzip the file you downloaded to a directory, then open a command prompt / terminal window at that directory.
• Turn off your HTC Legend, then turn it back on with the 'back' button held down. You'll see 'FASTBOOT' written on the screen in a red box. Connect the phone to the computer.
• In the terminal window, enter either 'step1-windows.bat', './step1-mac.sh' or './step1-linux.sh' as appropriate.
• When this step has completed, REMOVE THE GOLDCARD and either format it and replace, or replace with a different (non goldcard) microSD.
• Navigate to the 'BOOTLOADER' and then 'RECOVERY' option on the menu, using the volume buttons to move and the power button to select.
• In the terminal window, enter either 'step2-windows.bat', './step2-mac.sh' or './step2-linux.sh' as appropriate.
• When this has completed, your device should be at the 'recovery' screen. Select the 'wipe' option, then select the option to apply an update zip from sdcard, and select 'rootedupdate.zip'. This will take a little while, so go make a nice cup of tea. When the flash has finished, reboot, and you are DONE!
• Unzip the file you downloaded to a directory, then open a command prompt / terminal window at that directory.
• Turn off your HTC Legend, then turn it back on with the 'back' button held down. You'll see 'FASTBOOT' written on the screen in a red box. Connect the phone to the computer.
• In the terminal window, enter either 'step1-windows.bat', './step1-mac.sh' or './step1-linux.sh' as appropriate.
• When this step has completed, REMOVE THE GOLDCARD and either format it and replace, or replace with a different (non goldcard) microSD.
• Navigate to the 'BOOTLOADER' and then 'RECOVERY' option on the menu, using the volume buttons to move and the power button to select.
• In the terminal window, enter either 'step2-windows.bat', './step2-mac.sh' or './step2-linux.sh' as appropriate.
• When this has completed, your device should be at the 'recovery' screen. Select the 'wipe' option, then select the option to apply an update zip from sdcard, and select 'rootedupdate.zip'. This will take a little while, so go make a nice cup of tea. When the flash has finished, reboot, and you are DONE!