i think this code is better xD

Code:
button1 (login)
if my.settings.loginname = "" then
msgbox ("you don't have a account ")
end if

button2 (register)
if my.settings.loginname = "" then
msgbox ("you need to write a name")
exit sub
else
if my.settings.loginpassword = "" then
msgbox ("lol you need to write a password")
exit sub
else
my.settings.loginname = textbox1.text
my.settings.loginpassword = textbox2.text
msgbox (" UBER YOU HAVE AN ACCOUNT :O")
end if
end if