Hi,
I have ran into this problem at work. The solution I use is to make a batch file and put it into the startup folder.
The batch file should read something like this.
net use G: /DELETE
net use I: /DELETE
net use J: /DELETE
net use K: /DELETE
net use G: \\"path"\"path"
net use I: \\"path"\"path"
net use J: \\"path"\"path"
net use K: \\"path"\"path"
Replace "path" with your actual drivepaths of course and remove the quotes.
Hopes this helps...