i had a similar issue a few months ago. which version of pablodraw are you using? try to resave it in version 3.2.1 or so.
Edit: YAY its working now ^o^
80 columns, 24 lines, 9600 baud or better recommended.
Making an ASCII image and then trying to convert it to ANSI might have been a mistake. Maybe. Also, the bubbles blink under DOS, but instead show up on a high intensity background under Windows.
EDIT: Re-saved out of Pablo instead of Acid. Blinking gone. Original version (with blinking) available here for those of you running ANSI.SYS under DOS.