ISP Blocking VPN.. is there a way around

Hi All!

I have a small problem

About 1-2 weeks ago, I noticed a problem getting into VPN at my office.
After speaking with my security specialist and several other VPN users, I found out the problem that I had was isolated only to me.

So after verifying all my configurations, I called my ISP... They said "VPN is a violation of our AUP". Stop trying to VPN into your office.
Frustrated with them, I hung up and read their AUP. It was certainly in there, in black and white.

Is therea way around?

Specs:
Cisco VPN Concentrater 3030
based at an OC12 broadband connection.

My side:
Cable modem w/ a Linksys Firewall BESF81 with a Windows XP Pro + windows 2000 box.

Thanks

let me know if you have any ?'s !!!!