Hi Guillermo, welcome to DreamHost (almost) 
In reply to:
how long i need to wait to use the hosting and domain
The fact that you posted your account number etc. indicates that you may not be aware that this is primarily a customer to customer support forum. Some DreamHost folks do post here on a semi regular basis, but it is not the best avenue for 'when will my account be approved' type queries. As others have suggested, lodging a support request via the Contact Support section of the panel is your best option in such cases.
Having said this, my own experience suggests that account approval times tend to vary from almost instant, to a few days, no-one outside of DreamHost is exactly sure why the approval times vary so much. Although, a DreamHost representative has stated on these forums that it can take a few days for Google Checkout to notify DreamHost of payments, so if you payed using this method, this could be a factor.
Anyway, welcome again to DreamHost, I hope it doesn't take too long for your account to be approved.
Mark