Sharepoint Transaction Logs are too large

When reviewing our MSSQL Data folder, we noticed that our SQL Server Database Transaction Logs have grown too large in size. 1 file is 100 gigs and another is 85 gigs. Any recommendations on shrinking the logs to a reasonable level or maintenance that we should implement?  
Emi975Asked:
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lcohanDatabase AnalystCommented:
You must backup the T-logs first before you can shrink the files. Please see more at:

backup t-log
http://msdn.microsoft.com/en-us/library/ms191284.aspx

shrink t-log
http://blog.sqlauthority.com/2006/12/30/sql-server-shrinking-truncate-log-file-log-full/

general backup info
http://msdn.microsoft.com/en-us/library/ms186865.aspx
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MrNeticCommented:
Hi, if you don't run transaction log backups, and are not interested in point in time recovery, you can alter database recovery model to simple and shrink the log to 1024MB (do in this order).
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lcohanDatabase AnalystCommented:
Simple or Full recovery mode you still need to backup before truncate - is just that in Simple recovery mode you have less logging.

BTW the truncate_only or no_log options are removed in next SQL 2008 version.
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Emi975Author Commented:
Dumb Question and thank you for your responses above. I will do backups of all the transaction logs  and databases before anything with Management Studio.

After my backup, I would just like the transaction log changes to be incorporated into the database and have a new transaction log started. How does a new transaction log begin or how do I make all previous transactions permanent. I think I am not asking this the proper way but my goal is:
Database file: mdf.
Transaction log: new file, that starts accounting for transactions starting today.
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lcohanDatabase AnalystCommented:
I don't think you can control that because SQL does it's own implicit "CHECKPOINT" that COMMITs all uncommited transactions from t-log to data(mdf) file.
As far as adding and running with 2 phisycal t-log files for a database this is not a good idea unless mandatory because yo are running out of space on the t-log drive.
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