Talking Need help with flashing ROM on ZTE Blade (Gen 2)

Hi .
I want to flash new ROM on my ZTE BLADE
Can anyone suggest me which ROM should I flash and how to flash.
I want to upgrade to android 2.3.5 or 2.3.7 from 2.2.2 .......Official ROMs will be cool .

My phones status -
ZTE Blade (Soft Bank 003Z)
Gen 2
CWM recovery v installed
current os version 2.2.2
CPU single core 600 Mhz (ARMv6)
RAM 420 mb (237 MB available)
Internal memory 162 MB
System 220 MB
Cache 37 MB
Kernel version
Build number 003Z_22.0

Plz help me .....
Thanks on advance ....