You either need it, or you don't, but you are not sure how to change the current setting to get your wish when you first start up LT.
In LT2007 and lower, you need to start Options command, Select the System Tab, Startup section, use the pulldown for the desired startup method of your choice. Remember to click APPLY button then OK to set it.
In LT2008, you can use the STARTUP command, set it to O (zero) for no startup, or 1 (one) for the startup dialog box to appear. Explore it in HELP in LT2008.