Hello everyone my name is Lynda...I bought a used MH721 and having a heck of a time setting it up. I went UScutter online to download drivers and SignBlaze software. The cutter cuts on, but I can't get it to work thru my USB port. Please Help...I don't know what i'm doing wrong. I own a GCC 24 bought brand new 4 yrs ago and didn't have no trouble getting it up and running. I bought my used MH721 over the weekend...and really is anxious to use the machine. Please someone guide me thru this if you can. Thanks Lynda