We're missing part of the error message on the screenshot, can you copy the whole thing and paste it in text instead ?
Error is "Unable to open datagram Socket on port 67,Interface :eth3 Address already in use DHCP Server on similar services is already exist."
what do you mean "also done it w/ option 60" ?
if pxe and dhcp are on the same box then you need to have option 60 set in the scope and during the pxe install you should have set the option of 'dhcp and pxe are on the same server'. if you want to be sure look for the 'listenDhcp' option in the NSH/br/blpxe or hklm\software\bladelogic\pxe server locations (unix/windows) - that option should be set to false.