One of the maddening things about working in the RE (compared to RW and Trainz), is that squidgy little window you have to work in.
Way back when, I'm sure there was a utility which allowed you to increase the size albeit at the expense of some blockiness. However try as I might, can't find it anywhere, the only information I can see is a registry hack (big red hand raised on that one). If anyone can point me to what I'm on about will get a nice +1 on their "Thanks" tally.