hmmm, sorry guys for the that mistake. Actually it is around 1-3 million rows. i was really sleepy & so added the EXTRA zero...
yeah Witto , i tried with the formats - txt format (tab delimited) but of no help...

Les: Actually huge logs are being generated due to some nonsense things done by some folks. the net guys are not ready to make any corresponding changes to their policy, they have simply ask me to bear with it...
currently, i m doing the process manually... once our audit is complete (5 days), i will definitely write an application that will help me & others to read an .EVT file.