tasm.exe and tlink.exe are old DOS programs that will not run under a 64 bit OS. There is no 64 bit version. You would need to run a virtual machine such as VirtualPC, or a virtual DOS environment such as DosBox.
The information on Computing.Net is the opinions of its users. Such
opinions may not be accurate and they are to be used at your own risk.
Computing.Net cannot verify the validity of the statements made on this
site. Computing.Net and Purch hereby disclaim all responsibility
and liability for the content of Computing.Net and its accuracy.