Is there a way to clean up this text graphic image up?

[fuss]

So I have a file that I want to enlarge and then print out to frame and hang on the wall. Problem is I don't have a high resolution version or the native file. So I was wondering, is there a way to clean up this image in Xara (there are lots of stray pixely dots around the text) so I can get a nice, clean, sharp graphic that can be enlarged and printed?

Please excuse the cuss word, although it does sum up my expertise in this area quite nicely, lol.

PS: I am using Xara Photo & Graphic Designer 9