Installation UID and GID question and CSV file import issue

I have installed the newest available ubersvn verison(12.03.9420-2) on CentOS 6.3.
Our company has a certain structure for users and groups.
I am still envaluation phase.
- Can I create the ubersvn user and group before the install and would the install work?
- The reason I ask is the UID and GID is defined our unix group and the automatically creating a random UID/GID number doesn't fit our company concept.

My main problem at the moment is the following:
I have imported 54 people through a csv file using the passwords from a htpasswd file of apache. The users were created without problem but no one seems to be able to log into their accounts with there password.
I have checked the svn.passwd file and these do not match what I have entered into csv file.
Am I missing something or should I have done something different?
I am unsure how to proceed or if I can proceed.
Any assistance or what I could have did wrong would be helpful.
here is a example of a user entry
htpasswd file: U190665:$1$PVaNx8mQ$soebM/MYQQKV3gIQCssTd/
svn.passwd file:U190665:$apr1$bebr$wb4O9zMI5UX0xEOVAqJBB/

Is there something I should have done with the encryption?
Can I import the users again but just the password file?
I vi'ed the svn.passwd file and entered the correct data and restarted everything but the login still didn't seem to work.

Thanks in advance for the assistance
Cheers
Michael