i have been using palm os treo 650 phone for years !!!

i was not even aware that we could even tweak the ROM

I am such a huge fan of palm phone.

I am using treo 650 and my current rom is 1.20-ENA

Please let me know that are the advantages of making changes in the ROM.

how to make this change ?

any thread of notes for beginners like me ?

few questions i have :--

1) Is there any way, i can reset my phone without opening the back cover?
i mean, is there any code i can dial in reset the phone

2) which phone is better treo 650 or centro ?

3) is palm webos is better then the os in 650? (I am very happy with 650 OS) ?

I will be thankful , if some one can respond my post .