I been through it.

1st, you dont need anything. Just filled up the forms at Digi MNP site and a day later, you will receive a call from Digi to double confirm that you are moving to Digi. Then they will courier the new SIM via Citilink in 2 working days (I received a day later). Then you will need to call Digi again when you received your new SIM. They will activate it in 48hrs (Mine get activated in less than 12hrs). Before they activate, Digi will send you an SMS on your OLD NUMBER telling you to switch SIM. Once you put in your new SIM, you're on the YELLOW GLOBE liao.

haha im already switch from xpax to hotlink...

registered at 12pm at hotlink promotion booth, just within half hour my xpax simcard is not active anymore and i had to change to the new simcard (hotlink) provide by maxis..

registration procedure really easy and fast, just bring ic and they'll give new simcard free

i think i'll use this hotlink a week or two, then i'll port to celcom uox for better rates