540.filost & lospad.32.c on my PC

[lingam]

this is my Hijackthis log file. Please let me know what to do next

Go to this post here first, and follow the instructions EXACTLY, especially about UPDATING and HJT-location.
How to remove Begin2Search/Coolwebsearch and Other Nasties

Then see How to post your Hijackthis log-files as an attachment.