Win98 machine linked to hub then router

This is another dumb question….but…I need help. I rent my garage out to a guy from another city who set up an ISP in my hometown. He pays me rent and told me that if I ran the cable from my office to the garage I could hook into the hub and router and get a faster Internet connection. I have done simple networking but somewhere I have screwed up? Can’t get a connection…I have a lan card installed and Cat5 cable that has been tested is installed. Csn you give me step by step instructions on how to get hooked up? THANKS….