Well I wouldnt have a clue what to program then. LOL, I only need stuff near I-95 and thats it. Im just flying through
For your purposes, I would just program in the VHF lo frequencies for the following counties:
Cecil, Barrack M, Northeast
Harford, Barrack D, Bel Air
Baltimore, Barrack R, Golden Ring
Howard, Barrack A, Waterloo
Prince George's, Barrack Q, College Park
Prince George's, Barrack L, Forestville
Montgomery, Barrack N, Rockville
State Police Scanner Frequencies and Radio Frequency Reference
The downside is that you will not be guaranteed to hear both sides of conversations, although along I-95 you should be fairly good.
If you want to hear the troopers reliably, you will need to invest considerable time and effort into complex programming of various county and regional TRS's, two of which are Phase 2 that are incompatible with your scanner.