I was afraid you would say that Ty!
I ended up creating 62 new parts (0603 Resistors between 0R and 1M) using the Library Toolkit which was easier than building each part with the Library Manager and Wizard but hardly trivial.
FORMAT,PGF,3
; for format 3 and later, new parts will default to being added together into the same group as they are created. To prevent this, either use format 2, or add the command PARTGROUP,NONE near the start of the file.
PARTGROUP,NONE
NAMESTEM,R
;Sets the default name stem when adding parts
NEWPART,"RES-0R-0603","RES, 0R, 1%, 63mW, 0603",,R,2,SM0603,2,
ADDATTR,R,0R
ADDATTR,Manufacturer,"ANY"
ADDATTR,Manufacturer Part Number,"GENERIC"
ADDATTR,FAMILY,"RES_SMT"
ADDPINATTR,*,PINTYPE=PASSIVE
NEWPART,"RES-1K-0603","RES, 1K, 1%, 63mW, 0603",,R,2,SM0603,2,
ADDATTR,R,1K
ADDATTR,Manufacturer,"ANY"
ADDATTR,Manufacturer Part Number,"GENERIC"
ADDATTR,FAMILY,"RES_SMT"
ADDPINATTR,*,PINTYPE=PASSIVE
NEWPART,"RES-1M-0603","RES, 1M, 1%, 63mW, 0603",,R,2,SM0603,2,
ADDATTR,R,1M
ADDATTR,Manufacturer,"ANY"
ADDATTR,Manufacturer Part Number,"GENERIC"
ADDATTR,FAMILY,"RES_SMT"
ADDPINATTR,*,PINTYPE=PASSIVE
etc... (another x59 times to be precise)
Once i set up the commands to create the first part it was a case of copying and pasting and then replacing the resistance values in each part name, description and attribute (which i achieved through excel rather than by hand editing).
Editing the attributes of multiple parts is a great feature that can be achieved using the spreadsheet format available in Library Manager > Attributes... but this feature disables the editing of Part names and Descriptions!