I agree with Consumer Products Guy. Having said that, here's what you can do with the raw data you describe. I presume that it's something like an ASCII file: A series of (X,Y) data points. The X numbers would be the time while the Y numbers would be the response of the detector in whatever units the detector uses (absorbance units, etc.). You need a program that will make a graph out of such data. One fairly cheap program that does this handily is Psi-Plot ($99 educators' price). Opening the program, you would copy and paste the values for X into one column of a spreadsheet. Paste the values for Y in another column. Then, again within the program, select an (X,Y) data graph, specify the values in the X column as the data points for the X-axis and the values in the Y column as the Y-axis, and click on the button to graph these. You will then get a graph consisting of the chromatogram. You can export this graph in Windows Metafile (WMF) format. Insert that into a Powerpoint slide and you will get a slide in which the chromatogram is fully editable: You can change the color, the line thickness, even edit individual data points (although of course we scientists never edit the data). Other scientific graphics programs will allow you to do the same thing. Having said this: I'm surprised that your HPLC control program doesn't have a feature permitting the export of a chromatogram in which this hasn't been done already. Start reading about the features of the program that controls your machine.