Help Re: Increasing size of Patitioned Drive

[Tu'te]

Kaltxi

Sam R40+

Standard partitioned drive C & D

All program files, windows etc default to C, ergo C is rapidly approaching bursting point at 28.89 Gigs used, from a 32.5 max.

D: is where all the family gumph lives. I've used 3.7Gigs out of 22.2Gig free, that's 18.5Gigs free.
G: New Volume (can you guess what I've done yet) 9.67 free space form 9.67 max.

Question/problem

After Googling 'how to increase partitioned drive size', I followed some geeks steps that informed me how to ‘Shrink’ D: volume in Disc Manager and now I have another drive space volume instead of enlarging the capacity of C: ?

Can I remove the new volume (G) without totally loosing that space? Also, how does one enlarge C: without creating a 'new' drive volume???????????
Assistance would be warmly welcomed on this chilly evening in cyber-space.

LT