In Cm right click on the asset with missing dependencies and then on view dependencies. At the bottom of the window click on view in main list, this will list all the known assets in the main window. In the seach panel on the left add the filter Location Download station and this will reuce the number in the main window to just those you are missing. Selct some or all depending on how many there are and drag them to the Download helper.
The ones that are showing up red are possibly for a version latter than the one you have, are you fully patched to the latest version of TS2010 which will show as v 3.3 in the top left of CM. You can add the column Build Number in CM by right clicking on the Headings bar of CM to add this to the columns shown.
Some assets are not on the dls and you might need to go to 3rd party sites, these will show up as unknown in the list of dependencies. You might find help in the description of the asset or in the config.txt file. If you cannot find information in the asset use Google to search for the kuid(s) it is very good at tracking down unknown dependencies.