For example:
in folder with "precomp038.exe" create bat file "precomp.bat"
Code:
precomp038 -slow -c6 -m8 -o%1.pcf %1
Then drag'n'drop file you want to precompress to "precomp.bat". After all remember to rename filename (remove old extension, i.e. Data1.bin.pcf -> Data1.pcf)
The same with srep:
Code:
srep -m3 %1 %1.srep
and reanme (Data1.pcf.srep -> Data1.srep)