As long as you use the same options for both, you should be fine. WPA-TKIP or WPA-PSK is typically the names for personal WPA. My problem was not actually answered by the TP-LINK technical support staff.
I can't access the router setup page because Internet Explorer loads, then encounters an error and has to close.
Firstly you can not use WPA, you can use WPA-PSK/WPA2-PSK or WEP.