Hey guys, for some lock screens for you Hero, head over to: http://androidforums.com/android-themes/17894-few-lock-screens-455x320px.html
Nice images their but how do you change your lockscreen?? Don't you mean these are for the home screen as a wallpaper?
If you click menu on the home page, then click wallpaper you shoudl be able to change your lockscreen wallpaper
The home screen wallpaper and the lock screen can be set seperatly, with the default lock screen (not an additional program). When I go Settings > Personalise the second and third options are Home wallpaper and Lock screen wallpaper