visualization....

queram

guys, I'm desperate. I've tried x visualization freewares but haven't found anythig suitable. SeLaVi - problems when more than 20000 numebrs are to be read in, paraview and mayavi crash so elegantly that all my pc freezes (???reason? I've discussed the issues with it specialist, no idea), opendx - quite difficult to start with, some other require exceed or similar supporting codes, other are commandline-driven (I don't want to learn new commands and syntax, why?), others require specific file format - need to convert my data using another software.... I have several fortran solvers, data in ascii files but cann't visualize them. I don't want to spend a week with studying manual, neither I want something highle elaborated. all I want is a code running on win2000, able to read my asci data and show me the contours/surfaces. is that so much? or the problem is I want it for free?