nvm I've figured it out.
BDS 2006:
1. Create new package
2. Menu: Components -> Import Component -> choose ActiveX
3. install package
4. Open vcl forms project
5. drop OPOS ActiveX VCL component onto your VCL Form
5. read the 1000 pages of the OPOS pdf document to figure it all out
So i have a lot of reading to do
