The Importer starts to count columns with 0 (zero), I presume you created the template manualy, and have column 1 and 2 defined ?
In that case simply shift to 0 & 1, that should do the trick
Note: you may have problems when trying to import Excel 2007 and higher at the moment, save as 2003/97 if you are unsure
Note: once you get it to work, the create template from Excel is realy handy
Note: remember to set the uploader to a proper files-size, as defualt it comes with "just" 5 Mb.