Create a 640 x 480 png file using Macromedia Fireworks. There use a transparent background with that straight white horizontal line and import it from Vegas.
KISS Method: Drop solid white event on a track above your title, then use Pan/Crop (turn off Lock Aspect Ratio) to adjust as required. Also make sure Stretch to Fit is set to No.
Hey Grazie - sorry to hear you've been ailing ( instead of "aleing") - get well soon you old git!!
Back to topic - talking of straight lines, it's about time the Vegas Text Generator allowed us to have underlined text, and a few more simple features such as gradient fills and separate colours for separate letters. I still like using the built-in titler, rather than these fancy TP apps that give us "macho bronze" looks etc.