Get this: http://supertoast.googlecode.com/files/cwm_126.96.36.199_u8510_with_charge.img
Copy it to your phone sd card. Get the Recovery Manager app, run it, select 'Recovery', then 'Install Recovery'. Browse to the img file you just downloaded to the phone, select it, and it will replace the ClockworkMod image that starts on charger/usb plug in with a battery charging screen instead. It's still ClockworkMod, just that you now need to hit Volume + and power (from memory) to boot to it. I got it from here: [Recovery] CWM v188.8.131.52 - Android-Hilfe.de
It's German, use Google translate to read it. It's a patched image. I just installed it on my X3, and registered here to help you. Cheers.