just a few steps to make run the module

1. 
copy the complete ShowTodaysBirthdays-folder into the mods-folder

2.
make a ne custom profile field "birthday", length 10 chars

3.
copy this line in the template/<your templdatefolder>/cc_usersettings.tpl (you can copy this in the register.tpl too, if you want your new users
to put in their birthday):
	{IF mod_ShowTodaysBirthdays}
        <tr>
          <td nowrap="nowrap">{LANG->mod_ShowTodaysBirthdays->CCcapture}:&nbsp;</td>
          <td>
            <?echo mod_ShowTodayBirthdays_GetDaySelectField()?> /
             <?echo mod_ShowTodayBirthdays_GetMonthSelectField()?> /
             <?echo mod_ShowTodayBirthdays_GetYearSelectField()?>
          </td>
        </tr>
        {/IF}
	
4.
If you want to show the birthday in the profile, then put this line in the template/<your templdatefolder>/profile.tpl:
	{IF PROFILE->birthday}
	<tr>
		<td nowrap="nowrap">{LANG->mod_ShowTodaysBirthdays->ProfileCapture}:&nbsp;</td>
              <td><? echo strftime($PHORUM["DATA"]["LANG"]["mod_ShowTodaysBirthdays"]['long_date'],$PHORUM["DATA"]["PROFILE"]["birthday"]); ?></td>
	      {ELSE}
	      <td></td>
                <td></td>
	</tr>
	{/IF}
	
5.
Turn the module on and enter the settings page. Read the hints and make your settings

6.
If you enables caching, you have to give the cache-folder all rights (chmod 777)

7.
enjoy :)