Delphi uses numerical package suffixes that started out with just the version number omitting the dot (7.0 -> 70) but since later on the versions were no longer following the standard numbering (I hate you Microsoft! You, with your stupid Windows 95 started this! Ok, back to topic.), it is no longer that easy. Also, some versions were omitted while others better should have been (hmpf - Delphi 8 - hmpf), so here is a list: If you are unsure, you can easily check in the Components/Packages menu. Select any of the Delphi packages there, they should have the correct suffix.