Do it now
Go fully digital right now, with no learning curve.   Your client service will drastically improve, you'll be in compliance with federal regulations, you can lock in deals you might otherwise lose by waiting for manual signatures, and you can eliminate your shipping bills.

System Requirements
- Microsoft Windows 2000 or higher (including Vista)
- 600 megahertz (MHz) Pentium processor, or an AMD Opteron, AMD Athlon64 or
  AMD Athlon XP processor
- Minimum of 128MB of memory (RAM), 256MB recommended
- 30 MB of hard disk space (230MB if .Net Runtime is not already installed.)