Hi,
To insert such content and such feature, you have to edit some HikaShop views like the "checkout | login" one.
It would require some PHP skills.
Otherwise you can activate the registration in the checkout but at this moment, the registration form would be displayed near the login one. There won't have such "no account" link.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.