Cant figure this out! Any help would be appreciated!

I am trying out parallels on my 2012 macbook air, i use a program called My Movies and it does not offer full support for mac so this is what i have to use. The problem i am having and it does not happen all the time. I need to have the movie listings in a UNC Path. So i go into the start menu and I type in \\Macbook Air-XXXX and it is supposed to pop up with my MacHDD and the drive I have connected to the computer. The \\Macbook Air-XXXX is this computer, now 90% of the time I get the WINDOWS NETWORK SECURITY LOG ON the other 10% is just pulls up like it should. No matter what i put into the 2 dialog boxes, I cannot log on. It asks for a USERNAME and PASSWORD which I enter but to no avail can I log on?? Whats the deal how do I fix this? If I cant get this to work right every time then I cannot purchase this software. Any suggestions would help. I have googled everything pertaining to the network security logon and have done what has been said on the net. None of these have worked!

Thanks

 

Anybody got any suggestions?

 

Use shared folders.

 

Thanks for the solution .