This is a limitation of most graphics formats. Enlarging them means pixelation, end of story.
Iv'e been looking for a wall poster of my Favourite car, but to no avail it looks simply that it hasn't been made. I got a program called Wall photo maker, which splits large Images up into A4 Squares so I can make my own Poster. However I know this sounds like a massive task, is there a peice of software out there that can Enlarge an Image without making it loose quality and become pixelated becuase I cant Find many Large Images of an 82' Firebird, Sureley there must be a peice of software that claims a reduction in qulity loss when enlarging? Any help?