Webform User Contact Form in Block
Webforms when created are nodes by default. In drupal 6 there was a module called webform block (http://drupal.org/project/webformblock) this got encorprated into webform with webform 3 (which as your using drupal 7 you will be using, I dont think its even possible to get webform 2.x on D7)

To get the webform as block:


Create your webform in a node. 
Edit the node.  
Select the Webform tab. 
Select the Forms settings tab.
Select the Forms settings tab.  
Select Advanced settings. 
Switch on Available as block. 
Save configuration.


Source: http://drupal.org/node/1447436