tracking mileage as a business expense

[Matt Scafidi McGuire]

I've been using Gnucash for personal finances for a while now.  Recently 
I started using it for my consulting business.  My question involves 
tracking and reimbursing for business mileage expenses on a personal car.

I may be mistaken, but I believe it has been explained to me that my 
consulting biz should pay me $.35/mile (or whatever the IRS recommends) 
for use of my automobile.  The biz then claims those expenses at tax 
time.  Is that correct?  Is there a way to track mileage directly in 
Gnucash (69,000mi-69,204 for trip on 6/19/03 to ...)?  It seems like it 
would be really nice if that could be associated with business jobs or 
invoices, but that may be not well thought out.  Does anyone have any 
thoughts?

Regards,
Matt