As per the Citrix Article , install the ADM files , however per the article you need to deploy the reg file’s to specific 32bit/64bit machines

http://support.citrix.com/article/CTX133565

Microsoft is slowly moving against login scripts , so the reg file with 100+ Keys needs to be deployed using the registry deployment in group policy. Rather than create these manually , you can convert the reg files to XML using this great tool : http://www.runecasters.com.au/reg2gpp

Once converted , just right click on the xml file and copy , then right click into a collection in the group policy editor and click paste

32bit XML : https://mega.co.nz/#!fFYCXJJS!BFq3Kyos8X6eVag1PvCxnlwigA4RxNV4hi2ANy75dtY

64bit XML : https://mega.co.nz/#!7QRQwRDB!ffUh5UG8vCFPd91qsGgc9QFj5g4hQVNsfPdhL5Ry4gY