Just polished up the spreadsheet I use for CG - if anyone else wants to use it or maybe improve on it, you can ftp it ftom here:
<a href="ftp://www.electrocution.com/pub/users/electroc/355cg.xls" target="_blank">ftp://www.electrocution.com/pub/users/electroc/355cg.xls</a>
It was done in Excel 2000, and may work elsewhere. The drop down buttons will not work in a Psion <img src="frown.gif" border="0"> . Working on the 206 one!
Cheers
phil