Well, what you could do is download WinRAR for free (or WinZip, but WinRAR is permanent whereas WinZip is just a 45 day trial I believe). You can download WinRAR here WinRAR
Then, after you download it, go to the abandonia webpage again and click on get it! red button to download the game. After you click it, a window should pop up asking you is you want to open/save/cancel, etc... and click save and save the file to your desktop for your convenience.
Once you do that, find the game (with a zip icon) on the desktop and right click on the icon. Once you right click on it, select the option Open with.
After that, choose WinRaR archiver selection and click on it.
A window should pop up with the folder dracula, double click on it.
Then, double click on the Dracula.exe file.
There are other ways of doing this (unzip with WinZap, or extracting files, etc..), but this the advice I received when I wanted to play a few old DOS games a couple of years ago and this is the method I went by and I havent changed a thing. That and WinRAR will not expire after 45 days and it is a nice tool to have (although I do have many actual packaged WinZip CD's, but I received them after I already knew about WinRAR. That being said, I could probably just give you a WinZip CD if interested).
Hope this helps.