Ok first off u wana make all ur backups download titanium manager and make a backup of all ure apps, then u wana boot ur phone into recovery turn phn off hold piwer and down vol button use vol down to select recovery once in clockwork use trackball to select backup and backup ure current rom 8ncase u run into probs lastly backup ur sd on ur comp jus to b safe. Ok to install a rom firstly pik the rom u want i recomend leedroid 2.3d lovin it at min download it put the .zip on root of ur sd not in a folder and dont unzip it, boot into recovery again and this time select install zip from sd card use trakball to select it let it do its thing and boom new rom first boot can take upto 10 mins so dont panic hope this helps