Problem with textfields (need help!)

[Xardas007]

Hello world!

My name is Sergey, I'm from Russia, and I've got a problem...

So, when a customer is selecting different items, and then enters information in cart to the textfields...but there are some problems with checking the information.

For example - textfield "e-mail" - user must write down his real (!) e-mail, but he can write only "@mail.ru" to this textfield, ad it will be checked as right textfield...but this is wrong!
Of textfield "Phone" - user must write down his real (!) mobile or home phone number - but user can write only "1", and it will be checked as right textfield...but this is wrong!

Other problems you can see in attachment picture...

Please, help me, because I can't check user's information right and correct, so the work of store is broken...

And the last one, If you can help with all of these problems, how can I associate Joomla's login/registration information with Virtuemart? That is, if user will be logged in by Joomla login form Virtuemart can take this information and create a new customer, usig this information?

Thank you!!!