This would be done via Automation directly after the image has been pushed. Assuming you have WinPE and your destination computer is a Dell Precision WorkStatio T3500, your script might look something like:
i:\rdeploy\windows\x64\firm -recurse copy L:\t3500\* prod:\drivers
i:\rdeploy\windows\x64\firm delete prod:\WINDOWS\system32\hal.dll
i:\rdeploy\windows\x64\firm delete prod:\WIDNOWS\system32\ntkrnlpa.exe
i:\rdeploy\windows\x64\firm copy L:\hal\halt3500.dll prod:\WINDOWS\system32\hal.dll
i:\rdeploy\windows\x64\firm copy L:\hal\ntkrnlpat3500.exe prod:\WINDOWS\system32\ntkrnlpa.exe
The above script assumes that your "i:" drive is mapped to your express share (i.e. \\altiris\express).
In our environment, we have our drivers and hal files in another drive "L:"
What the above script is doing is to copy an entire driver folder to your production drive (in this case...c:\drivers). Because we are dealing with many different machines (including older legacy machines), we delete the existing hal.dll and ntkrnlpa.exe from the machine and replace with machine specific versions.
If you are using other forms of automation (i.e. Linux or DOS), be sure to modify the script according to your needs and environment and use the correct firm command (see the different OS's in the "RDEPLOY" folder in your express share.