If you have a static IP address, you can use Network Access to cause your IP address to be "trusted." This is in Setup > Security Controls > Network Access. If you have a dynamic IP address, you can't bypass this feature; it is there for your own protection and salesforce.com has decided that they want to make sure that your account is not compromised by accident.
That being said, as long as you do not delete your cookies regularly, you should only have to authorize your computer once (the cookie has something like a 1 year expiration, and is refreshed each time you log in). Alternatively, you could use Outlook Edition and include your security token, and log in automatically using the salesforce.com toolbar.
If you have a static IP address, you can use Network Access to cause your IP address to be "trusted." This is in Setup > Security Controls > Network Access. If you have a dynamic IP address, you can't bypass this feature; it is there for your own protection and salesforce.com has decided that they want to make sure that your account is not compromised by accident.
That being said, as long as you do not delete your cookies regularly, you should only have to authorize your computer once (the cookie has something like a 1 year expiration, and is refreshed each time you log in). Alternatively, you could use Outlook Edition and include your security token, and log in automatically using the salesforce.com toolbar.