dicom to avi

That's easy. Load the study you wish to convert into the viewer. Select the series you want to export, go to the "Export" menu, the "Export to image(s)" and use the option "Export as AVI" in the sub-menu. For JPEG, BMP or TIFF, use one of the other options (depending on what you need to export - study, series, image or selection), decide on the format and export to a folder of your choice.