I posted this question on Linksys forum:
I would like to buy a WRVS4400N-EU router, please let me know if the VPN connection between this router and client PC requires a dedicated VPN Client Application to connect or just windows wizzard wihout any other application.
and I got answer: It requires the QuickVPN client.
But if VPN connection on WRVS4400N-EU requires QuickVPN does application support x64 bit system (ex. Winodws 7 x64) or mayby exists other application which supported 64-bit?
Please let me known.