Hmm, I haven't got enough possibilities to compare, therefore I cannot say definitely which requirements your system has to match. It ran fine on a Pentium II with 128 MB RAM. I estimate that this program will run even on quite weak systems. There could be some delays between an after an inquiry. At this point the program mirrors the vocabularylist, which could take a while, especially with very large vocabularylists. I doubt that Vocabulary Trainer runs on Non-x86-Architectures, but I haven't testet yet. It needs around 3 MB of memory and 10 MB on harddisk maximum.
This program runs on Windows and Linux. That means on Windows 95 or higher, as well as Mandrake/Red Hat/SuSE Linux. It should work on other Linux-distributions, too. You can emulate the Windows-Version on Linux, but I recommend the native version.