Download ZAM for Windows 64 bit
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Installation Guide
Step 1: After downloading ZAM_Setup.exe run it
Step 2: Select Installation mode. Its better do Admin Install
Step 3: Read the License carefully than agree than read before installtion summary of license than click next
Step 4: Select the Installation folder click on next than click on install
Step 5: Click on Next then click finish
For more info see ZAM Tutorials