that is after you unroot it back,
but the fact remains that rooting does void warranty
also, if you don't even know how to root,
how are you going to un root
but all I wanted to say is that if you're going to root your phone,
why not go for ap set and save that few hundred bucks

Monitor wat app running on background, use task killer if needed, for us, we rooted our desire so that we can flash custom rom to undervolt and to use setcpu so that we can control the frequency usage to save batt. Smartphone problem is always about battery drain, that's normal.

To make all app can be install on sdcard you can use sparepart app and set default install on sdcard/external, but i think u need to be rooted. Im not so sure because ive rooted my desire on the first day i got my phone.

Desire dont have 3g symbol, H symbol mean hsdpa equal to 3g connection, e symbol mean edge for 2g and g symbol mean gprs also for 2g

Just got my desire today 
And a noob question to ask....must i root my phone so tat i can move my app to micro sd?

Hey guys got a few questions, hope you all don't mind it ya

1) Is there any significant difference between Desire's HTC Sense and the 2 latest/newest HTC Sense in Desire Z&HD? If yes, mind stating it?
2)Does the current batch of Desire come with AMOLED or S-LCD? I hear there's no more production for the AMOLED version?
3)I hear about poor battery life and high temperatures, mind commenting?

Thanks ya!