Can I return an item purchased at 1 store and return it to a different store? I DO have the original receipt.

Yes

Yes u can

I believe if its the same store different location you should be able to

Absolutely!

Can the credit card I use to purchase an item be used to return the item that was too small

Yes, as long as you have your receipt. Some items aswell even without a receipt. But some items, mostly clothing if both store don't sell it then you cant return it without a receipt.

Thanx every1 4 the replies. I'll return the item 2 the store nearest me.

Yes even in a different state

Absolutely and you can even do so with no receipt.