I agree. If you're not computer savvy, then building your own computer for web browsing and e-mail will likely end up costing you more in parts. Then there's the labor and frustration of troubleshooting if needed. You'll also require a license of the OS. It's better to buy a pre-built desktop for what your dad needs. Check out the online outlet stores of HP, Lenovo, Dell, etc. You can usually find a good deal that way.