I'm sure some of you know about this already but I figured I would post it for those who do not.
If you need to pull/push files to/from your phone, and don't want to use ADB to do so, there is a GUI that is also included with the Android SDK that you can accomplish this with. And since you have been using ADB, you already have the SDK. The program is called Dalvik Debug Monitor and it's the same one that people have used for screen shots as well. It's located in the Tools directory in the SDK file structure and is named ddms.bat.
You'll still have to use ADB when pushing to /system to set it to RW . But you'll save a little typing, and it's a nice browsing tool as well.
1. Connect your phone and run ddms.bat.
2. Click anywhere in the left pane of the program.
3. Click the Device menu and select File Explorer.
You'll now see the /data, /sdcard, and /system directories. Browse through them and click on a file to pull from the phone. Then click the toolbar icon with the phone to save the file to your PC.
To push a file to the phone, click on the directory to push the file to on the phone, then click on the toolbar button with the disk. Select the file to push from your PC and click OK.