Can someone please direct to to what service pack I can download to change AutoCAD 2010 from Czec to English.

Thanks In Advance,

There is no "Service Pack" for this. You can either buy an upgrade to version 2011 EN, or buy a "language swap" upgrade, or - if you are on subscription - you can download the EN version from your Subscription Center, or - if you are a student - you can download the free En version from the students portal.