Hi Sifus, finally managed to root my desire and installed LeeDroid 1.7b. All seems to be fine and the system is quite stable too but I'm facing problem to create an ext partition. I used ROM Manager to create the partition and the phone rebooted to recovery mode but there is an error msg

--Install from sdcard...
Finding update package...
Opening update package...
Verifying update package...
E:failed to open /sdcard/update.zip (No such file or directory)
E:signature verification failed
Installation aborted.

What should I do now... Please help....