One PayPal account - two websites?

I have opened a PayPal account and verified it with my business bank account and am now in the process of setting up a Zen cart site.

I hit a snag and can't find a direct answer on the PayPal dev forum, so I wondered if any PayPal gurus here could help.

My question is... can I take payments into my PayPal account from two different websites that use IPN? I can only see one IPN URL in my PayPal profile, so my guess is, this can't be done? :dontgetit

Do I have to open a new account for each site?

You can use a single account for both stores
make sure that you setup paypal return url and IPN for one of the stores,

remember to use the same primary email address in both stores

zencart sends return url and IPN information in its string to paypal