Though in the system requirements section on the picasa website it is clearly written that it won't work for win 98 systems. But to my surprize when i took it on a CD-ROM when i was going home to install it a old, PIII 900 MHz machine with 64 MB of RAM not only did it get installed but worked perfectly too. (Except that it was unable to extract snapshot of the video files)
Thanks to picasa that i was able to show pics of 'Dhruv' to my mother.
As i said earlier now google just need riya to fill tha gap.