The AVI VIs should be located there, if they are not there was probably a problem with your installation. Launch the installer again by going to Add/Remove Programs and selecting National Instruments Software. From there another menu will open showing most of your NI software. Select on NI-IMAQ 2.6 and select modify. Double check that support for your version of LabVIEW is selected, and proceed with the rest of the install. If you are still having problems, I suggest calling going to www.ni.com/support and getting a hold of NI Tech support.