X1 installs perfectly into a Win98 bottle. It needs the file gdiplus.dll to actually run however.
Unsurprisingly cwyw fails, and if enabled in Word 2007 causes it to hang on startup. Fortunately you can use the Configure Endnote function to disable cwyw.dll and get word to work again.
Please crossover people can we (you) work on this, I would vote but without this functionality I'm not sure that purchasing crossover is for me.