Network my desktop to my laptop?

This is probably a simple solution, but i don't know what it is.

I want to share my cd drive on my desktop so I can watch Dexter on my laptop. My desktop is connected to a D-link gigabit switch, which is connected to a D-link wireless router. My laptop is wireless. Ive done the steps here, albeit i didn't do the setting my own ip address and crossover wire as thats unnecessary. I've gone through control panel - network sharing center - advanced sharing settings and turned off any password or required workgroup settings. Also my desktop and laptop are set to the default workgroup: "workgroup".

I can see the cd drive on the network, and my desktop can see it too, but both say that they don't have permissions to access each other. Whats the next troubleshooting step(s)?

 

Well that link told you to do everything except 'Share the Drive'.

To share the drive, go to 'My Computer', right click on your CD Drive; normally 'D:'. Select 'Properties' --> Sharing --> Advanced Sharing. Select the check box to 'Share this Folder' then under 'Permissions' choose who you want to share the drive with. If you're on your own network then 'Everyone' with Full Control may be fine. If not, then you may want to create an identical user account as the one on your desktop computer, onto your laptop then share that user acct so only you would be able to access the drive.