Added Compare MD5 dialog - Can compare one file's MD5 checksum with another automatically:

Compare MD5 with inputed/pasted one:

1. Select one md5 item with calculated MD5 checksum
2. Press F2, use the Edit | Compare MD5 menu item, or use the Compare MD5 right-click context menu item to bring up the Compare MD5 dialog
3. Or you just double click the md5 item
4. Input/paste MD5 in the lower edit control and watch the result in the top-right edit control

Compare two files' MD5 checksums:

1. Select two md5 items with calculated MD5 checksums
2. Press F2, use the Edit | Compare MD5 menu item, or use the Compare MD5 right-click context menu item to bring up the Compare MD5 dialog
3. Watch the result in the top-right edit control

Other tip:
You can select other md5 items without closing the Compare MD5 dialog.

Tip to compare MD5 checksums manually:
The MD5 algorithm determines that the MD5 checksum will become totally different even if the file has been changed a bit. For instance, it may change from C3FCD3D76192E4007DFB496CCA67E13B to 56785C60518BBA6B4F895CB73628C491, but to D3FCD3D76192E4007DFB496CCA67E13B? Scarcely possible. Therefore, when you compare MD5s manually, comparing the first/last a few characters is fine. If you are still not so sure, use the Compare MD5 dialog.