Yep, I support the Firefox suggestion. I just tried and the normal text increase under the view tab works here too.
It is great to see more and more 'mature' folks becoming proficient at using the computer. I did a short stint helping at a senior's comp course earlier this year and am ashamed to say that I expected them to be childlike basic in their skills. However, I found that many of them would put the younger generation to shame with their general computer efficiency.