I had just installed win98 Gold edition and started sify 2.7 version. It says MFC file error missing link etc error. Then I installed win98 SE it says illegal error in bbclient.exe. I tried call center number 1600333330 but no one picks that number. Now I had to install this winxp to write this message. So for sify the minimum configurations are winxp as operating system. They have very poor client for linux based system and mac system. For windows you can only use winxp !!!The beta testers have forgotten to check the software on all OS before releasing the software or sify has no licence of windows 98 to test? This just shows poor quality testing of a so called major ISP in the dialer/login client.PS: Sify is part of Satyam Computers who boasts of IT Exports in India and they give this quality standards of their ISP. The IT department who makes this softwares should be asked to give an explaination for this mistake.