Can't find serial from PSstore!!

[Nekodar]

referring to 2, this is correct. all of the items are automatically put into your ps3's thingy to be ready to use.

edit: also aren't people able to upgrade their existing accounts to CE to get the items?

It's possible to upgrade 1.0 SE accounts with 2.0 ARR PS3 CE, but what the OP seems to want to do is apply CE items ONLY from the PS3 version to the 1.0 account and make a new account as well which is not possible.
To upgrade the 1.0 SE account in his/her case would require the digital upgrade if he/she insists on using the PS3 with a new account.