Technically, if you wanted you could do it all through adb, but that would require you to know how to do that.
Basically you would do the following:
Open a command prompt and do the following:
cd C:\android-sdk-windows\tools
adb remount
adb shell (this should return a # sign. If not, you are not rooted)
cd /system/app
ls (this will list all of the apps you have. The apps are apk files)
rm nameofapkyouwanttoremove.apk
That should just remove the apk all together and "uninstall" the app. Keep in mind though, there are some apps you cannot/should not remove.
Granted, the above was how I sometimes did it on my Hero before I got the Evo, and I haven't tested on Evo yet, but adb hasn't changed so this should still work