I need help, eb/Gamestop wont let me preorder pokemon...>

like the title says today after i got payed i went to go preorder both diamond and peral for me and my g/f. but they told me they stoped takeing preorders on tuesday. But they did say they are opening at 8 am on sunday and will have about 30 extra copys of diamond but peral only like 4 extra copys.

Does anyone know where i can still preorder and be garunteed a copy for both diamond and pearl or should i just try to get there on sunday and pray for the best?

and if i do go on sunday what time should i get there because i want a copy of diamond and a copy of peral?

thanx.

I know that Amazon is still taking pre-orders.  I think Walmart and BestBuy are as well, but I'm not sure.  Also try Microcenter.com as they are starting to do pretty good with pre-orders.