Any way to use files from separate directories in mgmt studio?

Is there any way to add files from 2 different directories and have them retain their directory identity within the solution? When I attempt to add a file from another directory, mgmt studio makes a copy of the file in the default directory for the solution, which is not what I want. I want to be able to edit the script and have it stay (and update) within the directory from which it came. The only way I see now is to have multiple solutions, but since mgmt studio appears to only allow me to have one solution open at a time, this doesn't work either. Any suggestions?How are you performing this change, DTS or script?