Did you try importing it directly in Premiere? It might work...
The reason you're getting that error message is because H.264 uses profiles and levels to dictate encoding/decoding capabilities and video parameters; the preset you're using doesn't like the frame size, frame rate, or something similar. Instead of trying to convert it to H.264, check out the Ut Video Codec Suite which will allow you to encode a visually lossless AVI file at any frame size or frame rate. Note that you need the 64-bit version for Premiere Pro and AME CS5.
Once installed, the codec will appear when you use Microsoft AVI as your Format.
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WMV is not really an edit file... but since it belongs to Microsoft, you might try their software
Just tried to use Premiere Pro with out changing the WMV and premiere pro seems to be handling it well.
Thansk for the help. I am new to PC editing I come from a background with final cut pro/Quictime knowledge most of thse codecs are pretty foriegn to me.