how to transfer credit from site to box?

[ABI-GSM]

Treo650 Credits
15

Treo680 Credits
15

Sony-Ericsson Credits
40
Users Credits Transfer

i have some treo to unlock and i need credit. here is my ID:Box username:
FGBOX1278

Box serial:
E1429***

Activation date:
2008-10-28 14:16:46 | 28 October 2008

Account status:
Your account is up to date

Packs Activated:
PACK1 PACK2 PACK3 PACK5