Hardware is a laptop with first generation Athlon 1400, 128MB, very slow 30GB HDD. Windows XP is running barrely smooth with some tunning.
MS-Office is the only option and the three options in question can be good candidates in this particular case.
It could be Office 97, but I discard by myself. I have very bad experience in the past. Very old versions probably has a lot of bugs didn't fixed.