How Do I Mass-Edit/Add Keywords in Yahoo and/or MSN?

I have AdGrenade, and I wish to update massive amount of keywords to Yahoo! Search Marketing and/or MSN Adcenter. How do I do that, like how Google Adwords is capable of with it's offline software?

Thanks in advance!

For MSN, you can't do it unless you email your adjusts to a rep.

For Yahoo, you have to download your full account. Then you have to download a keyword report. Then you merge the 2 using Excel. The reason for merging is that you need each keyword ID and that's only in the account download.

BIG UPDATE: MSN's latest updates to their desktop editor now make it possible to do bulk adjustments just like with Google's editor.

Yahoo's editor remains closed to everyone but search agencies.

And my own editor remains closed until I figure out why I'm making my own editor.