A question that comes up every 2 or 3 weeks is whether ProofBuddy and Winklet will work together. Fortunately Winklet offers demonstration downloads of their templates so I was able to download one and see if I could get it to work.
The answer is sort of.
The first thing I tried to do was to create a form on one of the Winklet pages that would let me enter a passcode and login directly. It didn't work. Whether Winklet specifically strips out HTML forms or it's a Flash thing I don't know.
What you can do is to create a link to your ProofBuddy site using standard anchor tags using code similar to what's below.
<a href="http://www.example.com/proofbuddy/">Click to view your proofs</a>
While this doesn't allow them to login directly, it does at least create a link so that your clients can find their proofs.
If you still want the form you can add an HTML form in the index.html file. It worked, but I couldn't get it to look right.
Another suggestion is that you change the settings in ProofBuddy so that it goes back to your Winklet site after your client logs out. You can do this on the Options -> General tab by filling in your complete URL (including http://) in the field labeled "After Logout".
After a little more messing with the code I found a possible solution that allows you to have the form on the page and it still looks fairly decent.
If you look at the top right you'll notice a login form. To add this you'll need to open up the index.html file and add a few things. I'm going off the example #23 I downloaded, so yours might be a little different. If you have any questions be sure to post them in the comments section and I'll do my best to help answering them.
This first bit of code needs to go somewhere between the <head> and </head> tags.
The 775px width is the same as the Winklet Flash object. If your Winklet is different than that (look for WIDTH="775" in the index.html file) then change it to fit.
And to actually add the form add the following code just below <td align="center" valign="middle">.
<form action="http://www.example.com/proofbuddy/user/user-script-login.php" method="post">
Client Login <input type="text" name="passcode"> <input type="submit" value="Login">
You're going to have to replace the form action with your domain name and the path to your ProofBuddy folder, but leave the /user/user