Thats just a side step. Use iWork maaaaan.
I bought iWork '09 after installing SL, thinking with Mail having native Exchange, I'd try to do without MS Office:mac 2008 altogether.
BOY is it a struggle using iWork in a Windows-heavy environment. The incompatibilities are quite incredible to my mind, and while one learns ways to work around some of them, I'm still seriously struggling 2 months in.
Pages adds an extra line break after a table, every time it exports one to Word, so if you try to work with continually saving Word files you just end up with masses of line breaks.
Pages does not export soft-returns to Word, it just makes them hard returns, which defeats their purpose.
Pages does not export bulleted list settings to Word very well, and it exports font information in a way that Windows doesn't understand, with for instance "Calibri Bold" rather than Calibri that is bold, so that it's annoying to change any formatting for Windows users.
Numbers exports sheet names to Excel stupidly - first you get (by default) "Sheet1 - Table 1", then similarly if you keep working on an Excel formatted file it exports as "Sheet1 - Table 1 - Table 1" and like with the Pages line breaks, it just goes on forever if you don't actively cut the name every time; even then it is not ideal.
Numbers always applies cell borders and then if you remove them it sets 'gridlines' to hidden when exporting to Excel.
Numbers has its own font and size preferences and then enforces those on any cells beyond what it has shown in the file; and Helvetica Neue is not a font that Windows tends to have, and the cell sizes are so way off Excel's norm. One could get around this by saving a file with 65535 rows and 256 columns (Numbers' limits STILL) visible, but Numbers takes a good minute to open or save a file that big, even when all the space is empty.
Keynote imports master slides from PowerPoint pretty well, but exports the master features to be selectable objects on the slides, and the exported file shows no master slides in PowerPoint. Images and such on slides exported move around at random. Graphs export surprisingly nicely, but the axes actually mess up on being imported to Keynote again.
It's hard going all right!