Hard Drive Partitioning

Hello,
Nearly a year ago a friend of mine convinced me to install a version of Linux in a separate partition of my hard drive. The partition I created for this took hundreds of gigs of my hard drive and left only 45 for my C: drive. I removed linux shortly after. After a year of running everything from the E: drive created, I decided that it was time to fix this error instead of avoiding it. Using a partition editing program (EASEUS) I have ridden myself of the partition I have created however the partition is on a different "Disk". My C: and D: drives are on Disk 1, but I have 335 Gigs on Disk 2. Is there any way to merge these two into one?
Thank you in advance for any help.