All ELECTRIC dryers are 220v, yes, it's a major profesional rewiring job.

The 110v dryers you may have seen are GAS.

Yep you'll need a professional electrician.
You'll have to make a decision if you want a direct connection (220V directly connected to the dryer) or having a 220V outlet installed.

> All ELECTRIC dryers are 220v

Not true - there are some electric dryers that will run on 110v/15A. GE makes two of them, one with the controls on the bottom (for stacking over a washer) and one with the controls on the top. Whirlpool has one too. The GEs have larger capacity and easier to clean lint filters, but the Whirlpool has a proper moisture sensor to shut it off when the clothes are dry; i think the GE just uses a thermostat which is less accurate.

Still, if at all possible at a reasonable price - i.e. you don't need a new electric box to fit a 220v circuit breaker in ($$$), or live in an old apartment complex where you're not allowed to muck with the electrical service - have an electrician install a 220v/30a circuit. The resultant dryer will have access to 5500w rather than 1200w, and thus dry your clothes in considerably less time. You'll also have a much larger selection of dryers to choose from.