How do I get an Avatar Automatically to resize?

So. I'm making a new site, and we have encountered a problem with custom sized avatars. namely, they are too big. Getting people to go to the trouble of rezising their avvies is usually a bit of work, so is there any way that you can get an avatar to automatically be resized to the parameters specified? I'd appreciate feedback here. Thank you.
~Theseus12

Yes you can do that , but I need your forum version.

Hi,

If you forum version is phpBB3, as you specifiend in your profile, go to "Administration Panel ~> Display ~> Pictures and colors ~> CSS Stylesheet" and add:

Code:

.postprofile dt img {
max-height: 200px;
max-width: 150px;
}

You can change the values as you want.  

The Forum Version is phpBB2 (subsilver)
Thanks, Cassius, but the version isn't right (points to above version)

look here read all post ...

https://help.forumotion.com/t123666-how-to-constraint-avatar-sizes-pixels?highlight=resize+avatar

Wow. that is way beyond my skills to do. Just... got to www.saorpg.boaronly.com and PM me the username, and I'll give you Admin powers to get that done. thank you.