If you want to capture information from an image (i.e., optical tree recognition), there are a couple of applications for that. One is TreeThief and another is TreeSnatcher. You can find links on Joe Felsenstein's web sitem, which lists all sorts of software, include a sublist of phylogeny plotting software:
But I would not recommend optical tree recognition. If you are going to draw the tree from scratch, then I would suggest to create an input tree in Newick (Phylip) format like this:
( species1, species2, species3, species4 );
with all of your species names, in a plain text file. This will save you the trouble of adding the names later. This will create a tree with every species proceeding from the root node (a "star tree").
Archaeopteryx, FigTree, Mesquite, and PhyloWidget are some viewers that support editing of trees (see A: What is a good phylogenetic tree display program for large data sets?). In Mesquite, you can just choose "open" and then (in the translator dialog box) choose "Phylip (trees)" for the format, and a tree like the one above will be loaded. Then you can use the GUI branch-moving tool (the arrow) to click and drag the branches where you want them.