need help blog - thunder57

i need help!!! , im want to make obsidian conflict maps (obsidian conflicts is a mod co-op for hl2) i have set up hammer but i can't see the grid , and the silhouette of the objects so is very difficult mapping , if someone can help me post a comment with the ansewer ,thankyou ,
P.S:if i create a map i post it on modDB , as an add-on for obsidian conflict