Yes.
I assume you already have entered the Disk Manager tool
BTW: I am really multitasking... so if I dont get the message of what to over very well, please tell me
Down below, under the drive list, there is a selection of all the partitions (it looks kind of like a timeline)
Right click on the partition that you no longer want, and click Delete (or click Shrink, if you just want it smaller)
Now right click on the partition that you want bigger, and click "Extend"
Adjust as needed from there.