If you already have Internet access set up at home, you may be able to get phone service via your computer using a technology known as Voice Over Internet Protocol (VoIP).  While VoIP is not necessarily for everyone, it can be easy to set up and sometimes cheaper than regular phone services.  Also, VoIP technologies may give you new options, such as recording all your phone calls. 

Here are some tips if you're considering using VoIP.

VoIP providers
If you decide to use VoIP as a secondary (or only) phone service, there are quite a few companies that will work for you.  One of the best known is Vonage, whose plans range from $15 to $35 a month and include both local and long-distance calling.  Other competitors include Lingo, Packet8, and Speakeasy.  Prices will vary, but plans usually start at $20 to $25 per month, and VoIP monthly plans aren't taxed as heavily as their landline or cell-phone counterparts.

Skype calls
Skype works a bit differently.  Once you have the software installed, making calls to other Skype users is free no matter where they are.  If you call a regular phone, Skype charges a per-minute rate (the software is free, but you have to give payment information when you create an account).

Skype's international rates, like those of the monthly charging VoIPs, are very competitive.  If you know you'll be making a lot of calls overseas, you can check individual companies for the best deals.  Vonage, for example, offers a plan that includes unlimited calling to five European countries.

The hardware
If you go with a provider such as Vonage or Lingo, you'll be able to use your regular phone through an adapter.  With Skype, you'll want to buy a headset that works with your computer or a special Skype phone adapter that works with your home phone.  Depending on your computer setup, you may be able to use a Bluetooth headset.

The 411 on 911
Many VoIP services do not give you direct access to 911 services.  Instead, when you call 911 over a VoIP phone, the provider is supposed to connect you to 911.  You'll probably want to read the FCC's warnings about 911 service on VoIP before deciding whether or not to jettison your home phone line.  If you're considering a particular VoIP service, call them and ask what their 911 capabilities are in your area, as service can vary geographically. 

In the past, VoIP services have been criticized for sound quality, but they've had a lot of time to improve the technology.  If you're nervous, almost all plans have a 30-day money-back guarantee.  Or you can start with a few free calls on Skype, and later switch to a monthly plan.