K try this
1.go to desktop right click/new/newtextdocument
2.rename new text document to Halflife.exe
3.right click Halflife.exe then there should be a tab called program if yur using XP then in the comand line type
*C:\Sierra\Half-Life\hl.exe -console*without the * then hit apply
there will be the halflife.exe on yur desktop and also a shortcut that is Halflfe click that and u will get halflife start up
Also can anyone tell me why my sig wont show up?