SilkPerformer not prompting for load test folder with Reporter Tool Installed
If you do not have the SilkPerformer Reporter tool (results repository) installed, then see the following article relating to this issue:
SilkPerformer not prompting for load test folder name before test
However, if you do have the Reporter tool installed, then it is not possible to rename the LoadTest folders when the repository is enabled due to the way the information is held in the database.
The only option is to browse to the folder in Windows Explorer and rename from there, though you will then have disparity between what is in the results repository and what your folder is called. You could work around this though by incorporating the LoadTest number into your renaming for example LoadTest_21 to MyNewName_21, it will still appear in the Overview report and the repository referenced by the number 21.