The rep office thread is here: Complete Guide to Opening a Rep Office 2011 Update
The list of resident visa options is here: boca.gov.tw/lp.asp?ctNode=77 … DSD=7&mp=2
You may be able to apply for an investment visa, depending on your circumstances. If you’re going to be here for less than a year, it’s probably much less hassle to do a couple of visa runs to HK.