How do I install a custom ROM on sony experia ray ST18i? I unlocked the bootloader and rooted the device already like this:
How to unlock and root a Sony Ericsson Xperia Ray ST18i with 4.1.B.1.13 But How can I install a custom Rom now on the device?

I guess I have to enter the recovery menu for it?

I tried this, but it doesen't work:


  press the volume down key a few times when your
  phone boots up. The sony logo brightens at one
  point, press during that time
You have to install the drivers and then install ClockworkMod with help of x-Parts from Google Play to enable the recovery menu