Easiest way ever!
Copy this program to your phone
Run TBExport.exe
Press Export
Locate your exported file (contacts.csv)
Open your Gmail account online (
LINK)
Click on Contacts
Click on Import in the upper hand corner of the page
Import your “contacts.csv” file
YOUR SET TO GO!
Now just sync to your HTC Evo 4G with your Google account.
There are many other ways to do this, but this is the easiest way that I have found.