Hi Susan,
If the downloaded nickvoice packs are under RAR/ZIP format, please extract the downloaded file(s).
The extracted folder may include setting files as below:
NVC File - Nickvoice
EQ File - Equalizer
SNDQ File - Sound Quality
VEQ File - Voice Equalizer
...
Please follow this tutorial for detailed instruction on how to load the files into VCSD8:
support.audio4fun.com/tutorials/av-voice...-pre-saved-nickvoice
Furthermore, if the downloaded nickvoice packs are under EXE format, locate to the directory of the files and then run them. They will be automatically added to VCSD's Nickvoices menu.
After install the file successfully, run VCSD » Nickvoices » pick new nickvoice pack
Hope that helps!