On topic, --- but Off topic;; winrar

hi,,

My question is off-topic because it does not relate directly to win 98; but is on topic because i
am using win 98.

It is regarding winrar, and am hoping others here may have an answer.

How do i use the winrar program (i have it) to 'join' together multiple parts of a download.....?
In other words, if i have downloaded a music album from a news group, and it came in ten seperate
winrar parts, how do i join them together?
I have 'HJ splitter' which joins things or splits things, but i want to know how to join the 'rar'
files i have while they are still in 'rar' format.. should i extract them all first in the
folder i saved them in? or do i just point HJ toward the first 'rar' and let HJ figure it out?

I have d/loaded stuff before, whether mpg or wmv, wav, or etc,, and they join just fine, but in
this instance, the files are still 'zipped-up'.
I am asking because i am only about a third of the way through the complete download, and i dont
want to go further if i wont know how to join them in the end.

thanks for help.