Simply attach ur CV to d mail. On yahoomail click attachment then on d new page click browse. This should bring up file explorer from where you can now locate your cv (eg: click on desktop on the right if you have copied ur CV to d desktop) from wherever you have copied it to. Now select ur CV, it should now appear as a string of characters in d field next to the browse button you initially clicked. Click done/attach. Nw fill in d recipient details and send. Hope dis is explanatory enough