Output png files from multiple Illustrator Files

I am looking for a quote for a client, regarding images required for creating a shirt from Adobe Illustrator Files (CS4): Quote Information: We will supply all illustrator files (version: CS4), there are 48 of these. Each time we need a new pattern applied to a shirt, we will supply a high resolution image of the pattern; which needs converting into vector art (Illustrator) format. Each pattern will require each Illustrator file to be updated with the new pattern and output to a png file with alpha channel. Each of the Illustrator files represents a shirt part (such as sleeves, collar, etc). Work Required: For each pattern supplied, you will be required to convert pattern to vector art; open 48 different Illustrator files; apply the pattern and output each file to png format. Please supply a quote per pattern. A typical shirt pattern would be stripes or chequered; they do not get too complex. 1. Create a repeating pattern (vector art) from a supplied photograph of the pattern. (The pattern is used within the supplied Illustrator templates) 2. Open up each supplied Adobe Illustrator (cs4) file (48 of), apply the created pattern (in step 1) and output as a png file (with alpha channel) – with a specified name. 3. FTP the files to us