How do I change the VPN location with my Tomato Cloakbox VPN Router?

USA OpenVPN SSL VPN Gateways

vpn.ashburn.witopia.net
vpn.atlanta.witopia.net
vpn.baltimore.witopia.net
vpn.boston.witopia.net
vpn.chicago.witopia.net
vpn.dallas.witopia.net
vpn.kansascity.witopia.net
vpn.lasvegas.witopia.net
vpn.losangeles.witopia.net
vpn.miami.witopia.net
vpn.newyork.witopia.net
vpn.newark.witopia.net
vpn.portland.witopia.net
vpn.phoenix.witopia.net
vpn.redding.witopia.net
vpn.sanfrancisco.witopia.net
vpn.seattle.witopia.net
vpn.washingtondc.witopia.net

Canada OpenVPN SSL VPN Gateways

vpn.montreal.witopia.net
vpn.toronto.witopia.net
vpn.vancouver.witopia.net

Central/South America OpenVPN SSL VPN Gateways

vpn.mexicocity.witopia.net
vpn.saopaulo.witopia.net

Europe OpenVPN SSL VPN Gateways

vpn.amsterdam.witopia.net
vpn.barcelona.witopia.net
vpn.berlin.witopia.net
vpn.brussels.witopia.net
vpn.bucharest.witopia.net
vpn.budapest.witopia.net
vpn.copenhagen.witopia.net
vpn.dublin.witopia.net
vpn.frankfurt.witopia.net
vpn.helsinki.witopia.net
vpn.istanbul.witopia.net
vpn.kiev.witopia.net
vpn.lisbon.witopia.net
vpn.london.witopia.net
vpn.luxembourg.witopia.net
vpn.madrid.witopia.net
vpn.manchester.witopia.net
vpn.milan.witopia.net
vpn.moscow.witopia.net
vpn.mumbai.witopia.net
vpn.oslo.witopia.net
vpn.paris.witopia.net
vpn.prague.witopia.net
vpn.riga.witopia.net
vpn.rome.witopia.net
vpn.reykjavik.witopia.net
vpn.stockholm.witopia.net
vpn.vienna.witopia.net
vpn.vilnius.witopia.net
vpn.warsaw.witopia.net
vpn.zurich.witopia.net

Africa/Middle East OpenVPN SSL VPN Gateways

vpn.cairo.witopia.net
vpn.jerusalem.witopia.net

Asia OpenVPN SSL VPN Gateways

vpn.bangkok.witopia.net
vpn.hanoi.witopia.net
vpn.hongkong.witopia.net
vpn.kualalumpur.witopia.net
vpn.newdelhi.witopia.net
vpn.singapore.witopia.net
vpn.seoul.witopia.net
vpn.tokyo.witopia.net

Oceania OpenVPN SSL VPN Gateways

vpn.melbourne.witopia.net
vpn.auckland.witopia.net
vpn.sydney.witopia.net