Hmm, that's annoying, but makes sense, given how FitNesse handles SetUp at different levels of the page hierarchy.

How about the following setup (all in `.DbFit.AcceptanceTests.JavaTests`):

```
Db2Tests/FlowMode (move the original testcases, without SetUp, here)
Db2Tests/Db2iSeries/ (symlink Db2Tests/FlowMode into here)
Db2Tests/Db2iSeries/SetUp (iSeries-specific SetUp page)
Db2Tests/Db2zSeries/ (symlink Db2Tests/FlowMode into here)
Db2Tests/Db2zSeries/SetUp (zSeries-specific SetUp page)
```