Yes, you can message it to me directly. The service tags are unique indeed, and tied to your machine. I don't know how one would misuse them, but better be safe than sorry.
@Milk-ChanThanks, I have already updated x64 Update Pack to 2019-08 version. It's not released standalone, but link can be found in XP x64 Modern HW topic.
Most Dell images are identical, so you can just pick a different model and download the respective image.
If you want, you can also send me your service tag, and I'll have a look for the download for your model.