How to replace illustration with an image with the same effect

[sureshbala]

How to replace illustration with an image with the same effect. I have attached the pic with the illustration to be replaced with a new image from the local drive, while replacing the files from links the "Replace" option is not available.

Please see below:

This is the image I wanted to replace illustration with images: I would need to change the below three images with the image I created for the website mockup, Thanks, please help me as soon as possible.

[Monika Gause]

How is this artwork set up in Illustrator?

[sureshbala84]

Its a group of illustration placed in Layers as "Groups" 

[Monika Gause]

So you want to replace vector artwork with an image? That is not posible.

Place your photo, embed it, distort it with an envelope.

[Ton Frederiks]

If it is an image you want to replace, you need to have the image selected.