It is quite easy to write a csv file with double quotes using VBA I/O rather than saving the file as a csv file type. If you have some familiarity with writing VBA macros you could probably figure out how to do this fairly easily. Look up the keywords Open, Print #, Write #, and Close in the VBA helps.
If you are not familiar with VBA but would like to investigate this, respond back and I will post a bit of code that will write a worksheet in csv file format with the values enclosed in double quotes.