Remove Email required field

[webbie1985]

hi,

 

i am currently using PS1.4.9 and i am using the one page check out,

 

what i am trying to do is use no accounts ie no passwords, no login, no registration etc just guest checkout.

 

now the problem i am finding is that if i a customer buys something then comes back to buy again he cant use the email he first used.

 

now what i want to do is to get rid of it being required or prestashop not checking that there is a duplicate email address, if this is possible.

 

Thanks in advanced,

 

Paul