well in one of our travel system now there is manual booking system with person sending inquery through a form to email.

now to make it more pro we want to add paypal and other general payment options...like western unions...

we have some queries...

do we need to take all information of the person initially in our site....
we are thinking of "donate us" system
like person choosing pacakage
and then when click on booking taken to paypal site
transfer money to web owner account...most probably through URL(get)
and returning to site sending some indication to owner about success or failure

we are new to actual ecom...
so will this method work

are there any secure php package,class that we can intregrate with our existing system

thanks