I\'ve gone through the page Using Hardware Devices. My manifest has
On the phone, go to Settings -> Applications -> Development and make sure USB Debugging is enabled. (This location is from a Nexus One, it may be different on other Android versions)
I'm not sure all phones support this, the Android Dev Phone 1, Android Dev Phone 2, and the Nexus One do.
Once you do this, the phone should appear in the dialog you posted a link to in your comment on Alex's answer.
2 steps to follow
Enable USB debugging mode in your android phone. settings > Applications > development > enable the "USB debugging" check box
Enable manual deployment target on eclipse. Right Click on project > Run As > run configurations > select the "Target" tab > select the "Deployment Target Selection Mode" as ""manual""
Now run your application normally and you will be asked to choose the device you wanna run.
Then you can simply select the device you wish to run (Using serial number of the phone, if there are many devices running at the same time).
I just picked up Android development again, and this is what worked for me using HTC Hero (2.1 update 1) on Eclipse (v. 3.6 (Helios), Service Release 1):
See if this helps:
The same goes for Debug
.