General Support: Multiple uploads without FTP?

I've installed Plogger on one of my client's sites. It's a first for me, and I love the product so far. My client asked me if there is anyway he can upload multiple pictures at a time (basically by having multiple 'Browse' buttons to use before pressing 'Upload') and I said I'd look into it.

I know it supports importing multiple files assuming they're FTP'd somewhere, but this is beyond my client.

Tell me, is there any plug in or code modification I can do to make this possible?

How about something like this?
http://the-stickman.com/web-development/javascript/upload-multiple-files-with-a-single-file-element/

An interesting problem with this method is the intrinsic upload limit set for a single request in PHP (usually 2 Megabytes), which is the main reason why we avoided this in the first place. I think we can get around this limit using ini_set or some sort of PHP hack, but I'm not sure how reliable this is. There is another problem created by large server requests, it is difficult to display "Upload File Progress" for very large requests without using ActiveX or other proprietary technology. This would be a usability problem as people sat and waited for their uploads to complete with no way to know if the system is actually doing anything.

If anyone has any insights on this problem I would love to hear.

The last time I looked into something like this, there wasn't an easy way (or any way) to use Ajax to transfer an encoded form (which is what you need to do to send your files contents).
We took an easier option, rather than delve too deeply into it, and had multiple iFrames on a page, each with a file upload form. Cheap and nasty, but it worked.
I don't know if anyone else has found a more elegant solution, but I'll keep a look out for one.