user register to VB and another system in the same time?

[Data-Base]

hello,

i made a script that will use variables username , password, email and status) to register users to another small php system.

i like it to be like this

when the user submit the data from the registration form in VB it will copy this data to the other system (database) as well, so they don't need to register again to the other system.

do I have to do something with the file register.php in VB to get what I need.

the other problem is:

the passwords in the other system is not MD5(password) it use another style.

so how i can solve that.

thank you for your time