I made a USB bootable of backtrack5 using unetbootin. but, no ui appears for installation. first UI screen appears for selection for the type of install.In all types of installation selection after selecting the type of install I land on a terminal window.
P.S.: I am having dell inspiron 1525 model, 4gb, core2 duo, 2.40ghz, win7 32 bit installed and system supports 64bit os.