[Click General] wormix500:
hey.

a ot of information can be found here:

http://xdaforums.com/showthread.php?t=716282

i assume, that you have installed htc-drivers on your computer and are able to connect it via USB and use it as external storage.

first of all you should completely read this thread, because it is not sturctured or categorized.... to start you have to install install nandroid or clockworkmod...

an easy way is to install the ROM Manager, that can be found in Android's market.

>> market.android.com/details?id=com.koushikdutta.rommanager

consider, that the ROM Manager requires root-access to be completely usable! easiest way to root i know is maveric's 1click-root: http://xdaforums.com/showthread.php?t=950759

carefully read the readme and hopefully you're not afraid of using the command line ;)

so, now you can install the ROM Manager and start it. when it's running choose the first menu-item: something like "ClockworkMod Recovery-installation".

From now on it should be assured, that your battery is fully charged and i would suggest to connect your phone via USB to your computer.

After this is done your are able to backup your phone. Therefore you have three possibilities:

1. Choose in ROM Manager the menu-item "Reboot into Recovery system"

2. Scroll down and choose "Backup current ROM"

3. Leave ROM Manager, shutdown your phone and turn it on again by keeping Power- and Home-button pressed until ClockworkMod starts (this results in the same as the first possibility)

I prefer possibility one or three so i'll continue on base of this.

In ClockworkMod you have different options, one of them is "Backup and restore" - choose this by using your green call-button. Then choose again "Backup" - now your backup should start and if it completes successfully, your complete data is saved on the phone. Reboot your phone, make it accessable as an external USB-drive and copy the folder \\sdcard\clockworkmod\ on your computer's disk. if anything fails, this is needed to restore your system with clockworkmod.

Now download your preferred custom rom from the list here - i'm using nFinityGB-0.93 and i'm really satisfied about this rom...

download the zip, copy it to the root path on your sdcard \\sdcard\nFinityGB-0.93.zip and for an easier handling rename it to update.zip.

now restart your phone to clockworkmod and and run both wipe-options: "wipe data/factory reset" and "wipe cache partition".

afterwards choose the option "apply update from sdcard" and confirm. now your renamed update.zip will be installed on the system. now reboot the system and a new rom should boot...

for nFinity you should also install the patches mentioned in the thread. these should be installed also by using clockworkmod: option "install zip from sdcard" >> "choose zip from sdcard" and apply the downloaded zip, that should have been stored on the sdcard ;)

in each case always read the complete description in the thread and the readme of the used custom rom!

now enjoy your new rom...

besides that i would suggest to backup the used apps with appmonster to assure, that you don't forget which apps you've had installed ;)

in case of any quesions let me know.

hope this helps.

wormix