[windows] CMD (command prompt) can't go to the desktop

when I open the commend prompt the default line is this

C:\Windows\system32>

and I'm using SASS to convert a .scss file located located on my desktop.

I know the default line should be saying something like this C:\Users\the name of my machine

I type c:\Users\MyName\Desktop and hit enter I get this

'c:\Users\MyName\Desktop' is not recognized as an internal or external command, operable program or batch file.

Edit : Just for the guy who voted the question down, You could have just voted to migrate it to programmers stack exchange as I don't have the privileges. The question was answered before I learned about it not being suitable for the community and it also serves a help for the stack overflow community.