Gerber Composer alternative

My department is looking for an alternative to Gerber Composer. Does anyone have any suggestions? We are looking for a cost effective, user-friendly software substitute. The software is run on a Dell OptiPlex GX260 Intel Pentium 4 w/ 1 GB RAM and Windows XP. We import AI CS5 files remotely into Composer Version 2 to process and output them to Gerber GSPPlot. From there, the info is sent to a GerberEDGE FX thermal transfer printer and the foils are disbursed onto lexan. Then 3M Adhesive Transfer Tape 467MP is applied and the piece is cut in a Gerber enVision 375 plotter. We would like to be able to use the same materials, printer, and plotter. Any tips/help would be greatly appreciated. Thank you!