Hi Chris We using DotNetNuke 6.2.3 enterprise edition. In localhost all images i referred in skin file was came both login and Logout Period.I followed the following steps.1st I need to create one child portal. so i went Host-->SiteManagement-->Add New Site--> i choosed the child portal and also site title,description,keywords.I can able to create child site. After that i went Admin-->SiteWizard-->Blank Template-->Replace Content-->I choosed my installed skin and container in portal.And also I added HTML Modules. Both Skin and HTML Contains image tag.
Now I login as a superuser -->My content, Images ,Style properties everything came fine. Once i logout skin file not loaded due to that page alignment collapsed. Next in chrome i went inspect element i am not able to open those images.If i login as a host i am able to see those files.