IT is often perceived as a "support activity" akin to other services such as HR, Payroll, etc... A lot of that ends up bunched under the CFO for somewhat obvious reasons, though most CFO's wouldn't count themselves as IT managers.
Regardless of where you are on the org-chart, small-shop IT people - especially one-man shows - need to be engaging stakeholders and understanding the needs of the business and then provisioning solutions to meet those needs. All while keeping the systems up to date, answering questions about excel or whatever, managing hardware/software purchases/deployments, etc... If you're doing a good job, no one will care where you are in the org-chart - you're the IT guy/department, and you'll be perceived and engaged appropriately.