Do you guys want a different lock screen on your Micromax A73 then do this.
Open the file manager which have root access then go to home and then go to system and at the end you will find a file name build.prop copy and it and keep it safe if something go wrong then you can replace this backup with the changed build.prop so keep a copy of it and then again come back to the file and long press on it and select permission and check all the boxes then opne it with text editor and search the line curlockscreen=2 just cahnge it to curlockscreen=102 and then save the file. Reboot your phone you will have a default Gingerbread lockscreen(horizontal silider lockscreen).
and haan keep this thread posted
with your build prop tweaks...
Check out screen shots...