formatting of a cell to 2 decimal places

So here's the problem.
if I change the formatting of a cell to 2 decimal places, it appears as two decimal places (as it should) for example $88.88888 will show as $88.88

However, when I use this data in another application that displays this data it will display as 88.88888 still. I need to actually take the value and truncate it to 88.88 eg 8.8888888 will become 8.88

I have been using trunc by hand and wanted to try and find out if there is a way that I could write some sort of macro to do this for me each time.

Any help on the subject would be great as VBA is still new to me