I was wondering what swords looked like in the era of Charlemagne (768-814 A.D). It would be wonderfull if anybody had pictures of originals. So we're they late migration era blades or early "viking" style blades. By the way I already saw the sword & sabre of Charlemagne, my main curiosity is what the warriors in his campaigns fought with.

Well I am far from an expert on this topic but there have been a few interesting charts shared by the more knowledgeable members here. take a look at these:

http://www.myArmoury.com/talk/viewtopic.php?t=14152

and

http://www.myArmoury.com/talk/download.php?id=35405

I do not know the geographical changes in the swords at all, but I expect that in north western Europe they all would be fairly similar. (here I am probably showing complete ignorance... :D )
I hope that some better informed people can answer your question better.

Franks were frist known for their throwing axes when they frist migrated into europe and were largely known as foot soldiers. later during the era of Charlemagne the franks had adopted cavalry, it's during this time that franks become known for their lugged (or winged if you like the term) cavalry spears. there's not much research that i've seen the focuses on their swords. but the song of roland does give detailed descriptions on his sword that was very ortimental and possibly past down, but the song of roland may also be an older tale relating to an earlier hero and was roped into the era of charlemagne to enhance it's appeal. much like how tristan's tale was roped into king arthur court.

during Charlemagne's era, your just at the end of the migration era and the examples of 'frankish' swords (which i only have in books and their not scanned in at this time) show that the broad bladed 'migration' era sword is falling out of use. instead the examples show a longer more slender bladed weapon and there doesn't seem to be evidence of visable pattern wielding. The sword of charlemagne does show that there's some developements in the upper guard such as swords no longer have a sandwitched construction in the upper guard - as well as the guard is now being stretched out to show qillions.