What I am thinking is to have a subdomain (tw.mystore.com) under my main domain (http://www.mystore.com) but with a complete separate opencart install in a subfolder (http://www.mystore.com/tw) - basically a subdomain for each different country that points to its own subfolder that has its own opencart install. Is this doable/is this a messy idea?
I tried to simply install the additional language but found that it wasn't working so well with all the vqmods i have installed and i have no idea how to create multiple languages for a vqmod (can someone point me to a thread that might explain how to do this? i couldnt find it myself), and I noticed that I can't really have 2 languages for product titles so I just thought I should do a complete different install of opencart tailored to the other language. HOwever, I still want it under the main domain so I thought I could create a subdomain that points to a subfolder of the main domain but I don't know to do this..... Help!

P.S. does creating a subdomain equate to creating a whole new domain that i would have to buy from my webhost?