To add more options to the sizes: (for example, I added the option of 100x100 below:)
open admin_avatar_settings.asp and find this:
<select name="AvatarHSize" size=1>
<option value=32<% if rs("A_HSIZE") = "32" then Response.Write(" selected") %>>32</option>
<option value=48<% if rs("A_HSIZE") = "48" then Response.Write(" selected") %>>48</option>
<option value=64<% if rs("A_HSIZE") = "64" then Response.Write(" selected") %>>64</option>
</select></font></td>
change it to this:
<select name="AvatarHSize" size=1>
<option value=32<% if rs("A_HSIZE") = "32" then Response.Write(" selected") %>>32</option>
<option value=48<% if rs("A_HSIZE") = "48" then Response.Write(" selected") %>>48</option>
<option value=64<% if rs("A_HSIZE") = "64" then Response.Write(" selected") %>>64</option>
<option value=100<% if rs("A_HSIZE") = "100" then Response.Write(" selected") %>>100</option>
</select></font></td>
and then find this:
<select name="AvatarWSize" size=1>
<option value=32<% if rs("A_WSIZE") = "32" then Response.Write(" selected") %>>32</option>
<option value=48<% if rs("A_WSIZE") = "48" then Response.Write(" selected") %>>48</option>
<option value=64<% if rs("A_WSIZE") = "64" then Response.Write(" selected") %>>64</option>
</select></font></td>
and change it to this:
<select name="AvatarWSize" size=1>
<option value=32<% if rs("A_WSIZE") = "32" then Response.Write(" selected") %>>32</option>
<option value=48<% if rs("A_WSIZE") = "48" then Response.Write(" selected") %>>48</option>
<option value=64<% if rs("A_WSIZE") = "64" then Response.Write(" selected") %>>64</option>
<option value=100<% if rs("A_WSIZE") = "100" then Response.Write(" selected") %>>100</option>
</select></font></td>