In 3D Max I used the Impact font converted to an editable poly and extruded the new shape. I used the mental ray daylight, sun and sky.

This is the render created in Max.

Here I have extracted the word shape by using the pen tool in CS5. The shape/word was changed to black and white.

Placed the shape onto the background.

Using the impact font in Photoshop made this for the texture to be applied to the WALL shape. It has the bevel/emboss and drop Shadow FX's.

Setting the perspective plane using the "Vanishing Point" filter in CS5. I listed the link to a really good tutorial from Planet Photoshop about how to use the vanishing filter. See link below.

The texture/text resulting from the vanishing point filter was rendered onto a layer unto it's self. Blend mode for this layer of texture was set to Vivid light. Beneath that text layer and above the Max rendered word shape is another layer of color (7c3a12.) This color layer's blend mode is Color Burn. The shadow was produced by duplicating the WALL shape and using the hue/sat adjustment I lowered the lightness to black. Placing this new layer beneath the shape and free transform/skewed it into perspective.Used Gaussian blur and multiply as the blend mode, the opacity lowered slightly. To help blend the new wall with background the clone tool was used by taking samples of the grass from background and placing them on a layer on the top of the stack. To finish off the shading I used the burn tool.