If you use the download 2 mod here is how to make it work with the postbit mod.
admincp >> Styles & Templates >> Style Manager >> Theme >> Edit Templates >> Downloads Templates >> downloads2_postbit
Replace all of the code with the code below
PHP Code:
<div class="eti_postbit">
<{vb:rawphrase dl2_downloads} : {vb:raw post.dl2_downloads}</div>
<div class="eti_postbit">
<{vb:rawphrase dl2_uploads} : {vb:raw post.dl2_uploads}</div>